Claims
- 1. A toner composition for the development of electrostatic latent images consisting essentially of a mixture of (1) a first component which is a resin, (2) a second component which is a photochromic material selected from the group consisting of (a) spiropyrans of the formula ##STR27## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each, independently of the others, are hydrogen atoms, alkyl groups, aryl groups, arylalkyl groups, silyl groups, nitro groups, cyano groups, halide atoms, amine groups, hydroxy groups, alkoxy groups, aryloxy groups, alkylthio groups, arylthio groups, aldehyde groups, ketone groups, ester groups, amide groups, carboxylic acid groups, or sulfonic acid groups, wherein two or more R groups can be joined together to form a ring, (b) spirooxazines, (c) spirothiopyrans, (d) bisimidozole compounds, (e) bis-tetraphenylpyrrole compounds, (f) hydrozine compounds, (g) aryl disulfide compounds, (h) stilbene compounds, (i) aromatic azo compounds, and (j) mixtures thereof, (3) a third component which is a charge control agent, (4) an optional fourth component which is a colored dye, and (5) an optional fifth component which is a colored pigment.
- 2. A toner composition according to claim 1 wherein the photochromic material is present in the toner in an amount of from about 1 to about 20 percent by weight.
- 3. A toner composition according to claim 1 wherein the photochromic material is present in the toner in an amount of from about 5 to about 10 percent by weight.
- 4. A toner composition according to claim 1 wherein the photochromic material is a spiropyran of the formula ##STR28## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each, independently of the others, are hydrogen atoms, alkyl groups, aryl groups, arylalkyl groups, silyl groups, nitro groups, cyano groups, halide atoms, amine groups, hydroxy groups, alkoxy groups, aryloxy groups, alkylthio groups, arylthio groups, aldehyde groups, ketone groups, ester groups, amide groups, carboxylic acid groups, or sulfonic acid groups, wherein two or more R groups can be joined together to form a ring.
- 5. A toner composition according to claim 1 wherein the photochromic material is a spirooxazine.
- 6. A toner composition according to claim 1 wherein the photochromic material is a spirothiopyran.
- 7. A toner composition according to claim 1 wherein the photochromic material is selected from the group consisting of 1',3'-dihydro-1',3',3'-trimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-(2H)indole!, 1,3-dihydro-1,3,3-trimethylspiro�2H-indole-2,3'-�3H!naphth�2,1-b!�1,4!oxazine, and mixtures thereof.
- 8. A toner composition according to claim 1 wherein the charge control agent is selected from the group consisting of alkyl pyridinium halides, distearyl dimethyl ammonium methyl sulfate, distearyl dimethyl ammonium bisulfate, zinc 3,5-di-tert-butyl salicylate compounds, aluminum 3,5-di-tert-butyl salicylate compounds, and mixtures thereof.
- 9. A toner composition according to claim 1 wherein the photochromic compound is selected from the group consisting of bisimidazole compounds, bis-tetraphenylpyrrole compounds, hydrazine compounds, aryl disulfide compounds, stilbene compounds, aromatic azo compounds, and mixtures thereof.
- 10. An imaging process which comprises generating an electrostatic latent image on an imaging member and developing the latent image by contacting the imaging member with a toner according to claim 1.
- 11. A process which comprises (a) generating an electrostatic latent image on an imaging member; (b) developing the latent image by contacting the imaging member with a toner according to claim 1, said photochromic material in said toner having a first state corresponding to a first absorption spectrum and a second state corresponding to a second absorption spectrum; and (c) thereafter effecting a photochromic change in at least some of the photochromic material in the developed image from the first state to the second state.
- 12. A process according to claim 11 wherein the photochromic change in the photochromic material from the first state to the second state is effected by irradiation with radiation at a selected wavelength.
- 13. A process according to claim 12 wherein said radiation is within the ultraviolet wavelength band.
- 14. A process according to claim 11 wherein the photochromic material in the second state subsequently is caused to undergo another photochromic change, thereby returning it to the first state.
- 15. A process according to claim 11 wherein the photochromic material in the second state subsequently is caused to undergo another photochromic change effected by irradiation with visible light, thereby returning it to the first state.
- 16. A process according to claim 11 wherein the photochromic material in the second state subsequently is caused to undergo another photochromic change effected by heating, thereby returning it to the first state.
- 17. A process according to claim 11 wherein all of the photochromic material in the developed image is caused to shift from the first state to the second state.
- 18. A method according to claim 11 wherein a first portion of the photochromic material in the developed image is caused to shift from the first state to the second state and a second portion of the photochromic material in the developed image remains in the first state.
- 19. A toner composition for the development of electrostatic latent images consisting essentially of a mixture of (1) a first component which is a resin, (2) a second component which is a photochromic material selected from the group consisting of bisimidazole compounds; bis-tetraphenylpyrrole compounds; hydrazine compounds; aryl disulfide compounds; stilbene compounds; aromatic azo compounds; spiro�2H-1-benzopyran-2,2'-indoline!; 6-acetyl-1',3'3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-allyl-5'-chloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-allyl-3',3'-dimethyl-6'-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 8-allyl-6-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-allyl-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!: 8-allyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-amino-5,7-dichloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-amino-7-hydroxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-amino-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-amino-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-amino-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-amino-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-amino-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-amino-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-amino-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 1'-amyl-5-bromo-3',3'-dimethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 1-amyl-3',3'-dimethyl-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 1'-amyl-3',3-dimethyl-6-methoxy-8-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 1'-amyl-3',3-dimethyl-5',6-dinitro-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 1'-amyl-3',3-dimethyl-8-methoxy-5,5',6-trinitrospiro�2H-1-benzopyran-2,2'-indoline!; 1'-amyl-3,3'-dimethyl-6-trinitrospiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-1'-butyl-3',3'-dimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-bromo-1'-butyl-3',3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 8-bromo-5'-chloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-bromo-5'-chloro-7-hydroxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!: 5-bromo-5'-chloro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-5'-chloro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-6'-chloro-8-methoxy-6-nitro-1',3',3',7'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-5'-chloro-6-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-5'-chloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-7'-chloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-5'-chloro-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-bromo-5'-chloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-4',6'-dichloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-4',7'-dichloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-5',7'-dichloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-5'-chloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-3',3'-diethyl-8-methoxy-1'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-5',8-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-7',8-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-5',8-dimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-3',3'-dimethyl-1'-ethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-3',3'-dimethyl-1'-ethyl-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-1',3'-dimethyl-3'-ethyl-6-methoxy-8-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-1',3'-dimethyl-3'-ethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 8-bromo-3',3'-dimethyl-1'-ethyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-3',3'-dimethyl-1'-isoamyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-1',3'-dimethyl-6-methoxy-8-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-1',3'-dimethyl-8-methoxy-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-3',3'-dimethyl-6-methoxy-8-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-3',3'-dimethyl-8-methoxy-6-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 8-bromo-3',3'-dimethyl-6-nitro-1'-propylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-3',3'-dimethyl-1'-propylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-1'-dimethylamino-8-methoxy-3'-methyl-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-5',6-dinitro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-3',3'-diphenyl-8-methoxy-1'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-4',6'-diphenyl-8-methoxy-6-nitro-1',3',3'-trimeihylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-4'-fluoro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-5'-fluoro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-bromo-7-hydroxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-1',3',3',4',7'-pentomethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-1',3',3',5',7'-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-6-methoxy-8-nitro-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-6-methoxy-8-nitro-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-1',3',3'5'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-1',3',3',6'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-1',3',3',7'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-6-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-bromo-6-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-bromo-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-8-methoxy-5-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-5'-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-8-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-bromo-6-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-6-nitro-4',6',8-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-6-nitro-4',7',8-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-bromo-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-bromo-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-bromo-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-5'-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-bromo-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 1'-butyl-6-chloro-3',3'-dimethyl-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 1'-butyl-3',3'-dimethylspiro�2H-1-benzopyran-2,2'-indoline!; 1'-butyl-3',3'-dimethyl-6,8-dinitrospiro�2H-1-benzopyran-2,2'-indoline!; 1'-butyl-3',3'-dimethyl-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 8-carbomethoxy-5'-chloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-carbomethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-carbomethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-carbomethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-carbomethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-carboxy-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-carboxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-carboxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-carboxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-carboxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6,8-dibromo-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6'-chloro-5,7-dimethoxy-6-nitro-1',3'3',7'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-7,8-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7'-chloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-5,7-dimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-5',8-dimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-7',8-dimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-3',3'-dimethyl-1'-ethyl-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 5-chloro-1',3'-dimethyl-8-methoxy-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-3',3'-dimethyl-8-methoxy-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-3',3'-dimethyl-8-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-5.6-dinitro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6,6'-dinitro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6,8-dinitro-7-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7'-chloro-5,6-dinitro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6,6'-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6,8-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-5',8-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-7-ethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-chloro-8-ethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-8-ethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-8-ethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-8-ethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-8-fluoro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-8-fluoro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6-formyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6-hydroxy-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6-iodo-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-8-iodo-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-7-methoxy-6-nitro-1',3',3',5-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-chloro-8-methoxy-6-nitro-1',3'3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-7-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-8-methoxy-5-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-5'-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7'-chloro-6-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7'-chloro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-chloro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline); 5'-chloro-8-methoxy-1',3',3-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-5'-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-chloro-7'-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-8-methoxy-1',3',3'-trimethyl-5,6,6'-trinitrospiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6-nitro-1',3',3',5,7-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6-nitro-1',3',3',5,8-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-8-nitro-1',3',3',5,7-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-chloro-6-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 4'-chloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!;5-chloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'chloro-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6'-chloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-chloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7'-chloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-chloro-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-chloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-6-(.beta.-nitrovinyl)-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-chloro-1',3',3',5,7-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-4',7',8-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-chloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline; 5'chloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-chloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-chloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-chloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!: 6-cyano-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-diallyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6-dibromo-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dibromo-5'-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dibromo-5-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dibromo-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dichloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',8-dichloro-5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6-dichloro-3',3'-dimethyl-8-ethoxy-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-1',3'-dimethyl-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-3',3'-dimethyl-6-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dichloro-5,6-dinitro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dichloro-7,8-dinitro-6-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-5',6-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-4',6'-diphenyl-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6-dichloro-8-ethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dichloro-8methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-5'-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-7'-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dichloro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6-dichloro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',6-dichloro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,7'-dichloro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-6-nitro-1',3',3',4',7'-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-6-nitro-1',3',3',5',7'-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-6-nitro-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-6-nitro-4',5',6',7'-tetrafluoro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',6'-dichloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dichloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-6-nitro-1',3',3',5'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,5'-dichloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',6-dichloro-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-6-nitro-1 ',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,8-dichloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',7'-dichloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline; 5',8-dichloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dichloro-5-nitro-1,3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7,8-dichloro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro�2H-1-benzopyran-2,2'-indoline!; 5',6-dichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',7-dichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7,8dichloro-1',3',3'-trimethylspiro�2H 1-benzopyran-2,2'-indoline!; 4',7'-diethoxy-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-diethyl-6-methoxy-1'-methyl-8-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-diethyl-8-methoxy-1'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-diethyl-1'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-diethyl-3'-methyl-4',7',8'-trimethoxyspiro�2H-1-benzopyran-2,2'-indoline!; 7-diethylamino-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dihydroxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-diiodo-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',8'-dimethoxy-3',3'-dimethyl-1'-ethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy-3',3'-dimethyl-5',6-dinitro-1'-isoamylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy-1',3'-dimethyl-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy3',3'-dimethyl-6-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 1',8-dimethoxy-5,6-dinitro-3'-methyl-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dimethoxy-6,8-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy-6,8-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',8-dimethoxy-5,6-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6',8-dimethoxy-5,6-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7',8-dimethoxy-5,6-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dimethoxy-8-ethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',7'-dimethoxy-8-ethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy-4'-fluoro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy-5'-fluoro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',8-dimethoxy-3'-methyl-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy-6-nitro-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7'-dimethoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',6-dimethoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',8-dimethoxy-5-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',8-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,7'-dimethoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7',8-dimethoxy-5-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7',8-dimethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro�2H-1-benzopyran-2,2'-indoline!; 5,7-dimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',8-dimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7',8-dimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-6,8-dinitro-3'-ethylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-6,8-dinitro-1'-ethylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-5,6-dinitro-1'-hexadecyl-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-6,8-dinitro-1'-isoamylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-5,6-dinitro-1'-isoamyl-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-6,8-dinitro-1'-isoamyl-7-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-5,6-dinitro-8-methoxy-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!, 1',3'-dimethyl-5',6-dinitro-8-methoxy-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3,3'-dimethyl-5,6-dinitro-8-methoxy-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3,3'-dimethyl-6,8-dinitro-7-methoxy-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-7,8-dinitro-6-methoxy-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-6,8-dinitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-6,8-dinitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-6,8-dinitro-1'-propylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-3',7'-diphenyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-8-ethoxy-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-3'-ethylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-1-dimethyl-1'-ethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-3'-ethyl-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1'-ethyl-8-methoxyspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-3'-ethyl-6-methoxy-8-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-3'-ethyl-8-methoxy-5-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-3'-ethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1'-ethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-3'-ethyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1'-ethyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1'-ethyl-8-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1'-hexadecyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1'-(.beta.-hydroxyethyl)-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3,3'-dimethyl-1'-isoamyl-8-methoxy-5,5',6-trinitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1'-isoamyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1-isoamyl-5',6,8-trinitrospiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1'-isopropyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-6-methoxy-8-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-8-methoxy-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-6-methoxy-8-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-7-methoxy-6-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-8-methoxy-5-nitro-1-phenylspiro�2H 1-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-8-methoxy-6-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-8-methoxy-6-nitro-1'-propylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-8-methoxy-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-8-methoxy-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-8-methoxy-1'-propylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3'-dimethyl-8-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3 ',3'-dimethyl-6-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-dimethyl-1'-propylspiro�2H-1-benzopyran-2,2'-indoline!; 1'-dimethylamino-5,6-dinitro-8-methoxy-3'-methyl-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 1'-dimethylamino-8-methoxy-3'-methyl-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 1'-dimethylamino-3'-1-methyl-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6-dinitro-8-methoxy-1',3',3',4',7'-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6-dinitro-8-methoxy-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6-dinitro-8-methoxy-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6-dinitro-8-methoxy-1',3',3',5'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6'-dinitro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!, 5,6-dinitro-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',8-dinitro-6-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,7'-dinitro-8-methoxy-1 ',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dinitro-5'-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dinitro-7-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6-dinitro-8-methoxy-1',3',3'-trimethyl-4',6',7'-triphenylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dinitro-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dinitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dinitro-1',3',3',7'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',6-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6,8-dinitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',6'-diphenyl-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 3',3'-diphenyl-1'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 4',6'-diphenyl-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',7'-diphenyl-6-nitro-1',3',3-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-ethoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-ethoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-ethoxy-1',3',3',4',7'-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-ethoxy-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-ethoxy-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-ethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-ethoxymethyl-6-nitro-1',3'3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 3'-ethyl-8-methoxy-3'-methyl-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 3'-ethyl-3'-methyl-6-nitro-1'-phenylspiro�2H-1-benzopyran-2,2'-indoline!, 8-ethyl-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4'-fluoro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-fluoro-6-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!, 5'-fluoro-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4'-fluoro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-fluoro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-fluoro-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-fluoro-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-fluoro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-fluoro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-formyl-7-hydroxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-formyl-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-formyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-formyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3',5,5',7-hexamethyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3',5,7,8-hexamethyl-6-nitrospiro�2H-1-benzopyran-2,2'-indoline!; 5'-(.beta.-hydroxyethyl)-8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-(.beta.-hydroxyethyl)-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-(.beta.-hydroxyethyl)-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-(.beta.-hydroxyethyl)-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-hydroxy-8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-hydroxy-5'-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-hydroxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-hydroxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-hydroxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-hydroxymethyl-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-iodo-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-iodo-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 1-methoxy-3'-methyl-6-nitro-3'-phenylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-methoxy-6-nitro-1',3',3',5,7-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-methoxy-6-nitro-1',3',3',5,8-pentamethylspiro�2H-1-benzopyran-2,2'-indoline; 7'-methoxy-6-nitro-1',3',3',5,7-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 7'-methoxy-6-nitro-1',3',3',5,8-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-methoxy-8-nitro-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-methoxy-8-nitro-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2-indoline!; 7-methoxy-6-nitro-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-5-nitro-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-5-nitro-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-3-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-methoxy-8-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-methoxy-8-nitro-1',3',3',5'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-methoxy-8-nitro-1',3',3',6'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-methoxy-8-nitro-1',3',3',7'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-methoxy-6-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-methoxy-6-nitro-1',3',3',5'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-5-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-5-nitro-1',3',3',6'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-5-nitro-1',3',3',7'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-1',3',3',4'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-1',3',3',5'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-1',3',3',6'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-1',3',3',7'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-1',3',3'-triethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7'-methoxy-8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-5-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-5'-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-methoxy-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-6-nitro-1',3',3'-trimethyl-4',6',7'-triphenylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-1',3',3',4',7'-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!8-methoxy-7'-phenyl-1'3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-4',6,7'-trichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-methoxy-1',3',3'-trimethyl-5,5',6-trinitrospiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-1',3',3',5,7-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-1',3',3',5,8-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-(o-nitrophenylazo)-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-(p-nitrophenylazo)-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!;6-nitro-7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-nitro-5'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-nitro-7'-phenyl-1'3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-8-piperidinomethyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-nitro-5,5',6,8-tetrachloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-4',5',6',7'-tetrafluoro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-1',3',3',5'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-1',3',3',6'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-1',3',3',7'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-1',3',3',8-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-nitro-1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-nitro-1',3',3',6'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-nitro-1',3',3',7'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-nitro-5',6,8-trichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-5,5',7-trichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-5,5',8-trichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-5,7,7'-trichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-5',7,8-trichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-nitro-5,6,8-trichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5-nitro-4',7',8-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-4',6',8-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-4',7',8-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-nitro-4',6,7'-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!, 5-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5'-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 7-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 8-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-(.beta.-nitrovinyl)-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-nitro-1',3',3'trimethyl-4',6',7'-triphenylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3',5,7-pentamethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3',6,8-pentomethylspiro�2H-1-benzopyran-2,2'-indoline!; 7'-phenyl-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 6-phenylazo-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3,3',3'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3',5'-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3',6-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3',7-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3',8-tetramethylspiro�2H-1-benzopyran-2,2'-indoline!; 5,6,8-trichloro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',6',8-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 4',7',8-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 5',7',8-trimethoxy-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!, 1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3'-trimethyl-5',6,8-trinitrospiro�2H-1-benzopyran-2,2'-indoline!; 1',3',3'-trimethyl-4',6',7'-triphenylspiro�2H-1-benzopyran-2,2'-indoline!; spiro�2H-1-benzopyran-2,2'-�1H!-benzo�g!indoline!; 8-methoxy-6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-�1H!-benzo�g!indoline!; 6-nitro-1',3',3'-trimethylspiro�2H-1-benzopyran-2,2'-�1H!-benzo�g!indoline!; spiro�2H-benzopyran-2,2,-�1H!-benzo�e!indoline!; 6-nitro-1'3',3'-trimethylspiro�2H-benzopyran-2,2,-�1H!-benzo�e!indoline!; spiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 8'-bromo-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 1-butyl-3,3-dimethylspiro�indoline2,3'-�3H!-naphtho(2,1-b!pyran!; 1-butyl-3,3-dimethyl-8-nitrospiro�indoline-2,3'-�3H !-naphtho�2,1-b!pyran!; 5'-carboxy-5-chloro-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 5'-carboxy-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 5-chloro-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 5-chloro-8'-nitro-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 4,7-dimethoxy-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 1,3-dimethyl-3-ethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 3,3-dimethyl-1-ethylspiro�indoline2,3'-�3H!-naphtho�2,1-b!pyran!; 3,3-dimethyl-1-ethyl-8'-nitrospiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 3,3-dimethyl-1-propylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 3,3-dimethyl-1-propyl-8'-nitrospiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 9'-hydroxy-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 5-(.beta.-hydroxyethyl)-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 5-methoxy-8'-nitro-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 5'-methoxy-8'-nitro-1,3,3-trimethylspirolindoline-2,3'-�3H!-naphtho2,1-b!pyran!; 5'-methoxy-10'-nitro-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 5-methoxy-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 5'-methoxy-1,3,3-trimethylspiro�indoline-2,3'-�3!-naphtho�2,1-b!pyran!; 7-nitro-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 8'-nitro-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 10'-nitro-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 1,3,3,4,7-pentamethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 1,3,3,5,7-pentamethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 5-phenyl-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 7-phenyl-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 1,2',3,3-tetramethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 1,3,3,5-tetramethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 1,3,3,7-tetramethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!pyran!; 1,3,3,-trimethylspiro�indoline-2,3'-3H!-naphtho�2,1-b!pyran!; spiro�indoline-2,2-�2H!-phenanthro�2,1-b!pyran!; 1,3,3,-trimethylspiro�indoline-2,2'-�2H!-phenanthro�2,1-b!pyran!; spiro�3H-anthra�2,1-b!pyran-3,2'-indoline!; 1',3',3'-trimethylspiro�3H-anthra�2,1-b!pyran-3,2'-indoline!; spiro�indoline-2,3'-(3H!-phenanthro�3,4-b!pyran!; 1,3,3-trimethylspiro�indoline-2,3'-(3H!-phenanthro�3,4-b!pyran!; spiro�indoline-2,2'-�2H!-naphtho�1,2-b!pyran!; 6'-chloro-1,3,3-trimethylspiro�indoline-2,2'-�2H!-naphtho�1,2-b!pyran!; 6'-nitro-1,3,3-trimethylspiro�indoline-2,2'-�2H!-naphtho�1,2-b!pyran!; 1,3,3-trimethylspiro�indoline-2,2'-�2H!-naphtho�1,2-b!pyran!; spiro (indoline-2,2'-�2H!-naphtho�2,3-b!pyran!; 10'-nitro-1,3,3-trimethylspiro�indoline-2,2'-�2H!-naphtho�2,3-b!pyran!; 1,3,3-trimethylspiro�indoline-2,2'-�2H!-naphtho�2,3-b!pyran!; spiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6-acetamido-3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6'-amino-3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6-bromo3,3'-dimethylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6-bromo-3,3'-dimethyl-6'-methoxyspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6'-bromo-3,3'-dimethyl-8-methoxy-6-nitrospiro 2H-1-benzopyran-2,2'-benzothiazoline!; 6-bromo-3,3'-dimethyl-6'-methylthiospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6-bromo-3,3'-dimethyl-6'-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 8-bromo-3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6-bromo-3'-methylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-butyl-6-nitro-3-phenylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 8-carbethoxy-3,3'-1-dimethylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 8-carbethoxy-3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 8-carboxy-3,3'-dimethylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6'-carboxy-3,3'-dimethyl-8methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 8-carboxy-3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6'-chloro-3,3'-dimethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6-chloro-3,3'-dimethyl-8-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3-(p-chlorophenyl)-8-methoxy-3'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6'-cyano-3,3'-dimethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6,6'-dibromo-3,3'-dimethylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6',8-dimethoxy-3,3'-dimethylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6',8-dimethoxy-3,3'-dimethyl-6,7'-dinitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6',8-dimethoxy-3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6',8-dimethoxy-3'-ethyl-3-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-6,6'-dinitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-6,6'-dinitro-8-methoxyspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-6'-hydroxy-8-methoxy-6-nitrospiro�2,2'-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-5'-isobutyramido-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-5'-methocrylamido-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-8-methoxyspiro 2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-8-methoxy-6'-methylthio-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-6'-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-8-methoxy-5-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-6'-methylthio-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3,3'-dimethyl-8-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-ethyl-8-methoxy-3-methylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3-ethyl-8-methoxy-3'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-ethyl-6'-methoxy-3-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-ethyl-8-methoxy-3-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3-ethyl-3'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-ethyl-3-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-ethyl-8-methoxy-6-nitro-3-phenylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-ethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-ethyl-6-nitro-3-phenylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3-isopropyl-8-methoxy-3'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-isopropyl-8-methoxy-3methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 7-methoxy-3'-methylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 8-methoxy-3'-methyl-6-nitro-3-phenylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 8-methoxy-3'-methyl-6-nitro-3-propylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-methylspiro�2H-1-benzopyran-2,2'-benzothiazoline!, 3'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-methyl-6-nitro-3-phenylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 3'-methyl-6-nitro-3-propylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; 6-nitro-3-phenyl-3'-propylspiro�2H-1-benzopyran-2,2'-benzothiazoline!; spiro�benzothiazoline-2,3,'-�3H!-naphtho�2,1-b!pyran!; 2',3-dimethylspiro�benzothiazoline-2,3,'-�3H!-naphtho�2,1-b!pyran!; 2',3-dimethyl-6-methoxyspiro�benzothiazoline-2,3,'-�3H!-naphtho�2,1-b!pyran!; 3-ethylspiro�benzothiazoline-2,3,'-�3H!-naphtho�2,1-b!pyran!; 3-ethyl-2'-methylspiro�benzothiazoline-2,3,'-�3H!-naphtho�2,1-b!pyran!; 3-methylspiro�benzothiazoline-2,3,'-�3H)-naphtho�2,1-b!pyran!; spiro�2H-1-benzopyran-2,2'-benzoxazoline!; 8-bromo-3'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzoxazoline!; 5'-chloro-3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzoxazoline!; 6-chloro-3,3'-dimethyl-8-nitrospiro�2H-1-benzopyran-2,2'-benzoxazoline!; 3,3'-dimethyl-6-methoxy-8-nitrospiro�2H-1-benzopyran-2,2'-benzoxazoline!; 3,3'-dimethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-benzoxazoline!; 3,3'-dimethyl-8-methoxy-6-nitro-5'-phenylspiro�2H-1-benzopyran-2,2'-benzoxazoline!; 3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzoxazoline!; 3,3'-dimethyl-8-nitrospiro�2H-1-benzopyran-2,2'-benzoxazoline!; 3,3'-dimethyl-6-nitro-5'-phenylspiro�2H-1-benzopyran-2,2'-benzoxazoline!; 3-ethyl-3'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-benzoxazoline!; 8-methoxy-6-nitro-3,3',5',7'-tetramethylspiro�2H-1-benzopyran-2,2'-benzoxazoline!; 8-methoxy-6-nitro-3,3',5'-trimethylspiro�2H-1-benzopyran-2,2'-benzoxazoline!; 6-nitro-3,3',5'-trimethylspiro�2H-1-benzopyran-2,2'-benzoxazoline!; 8-nitro-3,3',5'-trimethylspiro�2H-1-benzopyran-2,2'-benzoxazoline!; spiro�2H-1-benzopyran-2,2'-naphth�2,3-dioxazoline!; 3,3'-dimethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-naphth�2,3-d!oxazoline!; 3,3'-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-naphth�2,3-d!oxazoline!; spiro�2H-1-benzopyran-2,2'-naphth�2,1-d!oxazoline!; 3,3'-dimethyl-8-methoxy-6-nitrospiro�2H-1-benzopyran-2,2'-naphth�2,1-dioxazoline!; 2,2'-spirobi�2H-1-benzopyran!; 3-amyl-2,2'-spirobi�2H-1-benzopyran!; 3-amyl-6'-bromo-2,2'-spirobi�2H-1-benzopyran!; 3-amyl-6-bromo-6'-methyl-2,2'-spirobi�2H-1-benzopyran!; 3-amyl-6'-bromo-6-methyl-2,2'-spirobi�2H-1-benzopyran!; 3-amyl-6,6'-dibromo-2,2'-spirobi�2H-1-benzopyran!; 3-amyl-6,6'-dimethyl-2,2'-spirobi�2H-1-benzopyran!; 3-amyl-6-methyl-2,2'-spirobi�2H-1-benzopyran!; 5bromo-8,8'-dimethoxy-6-nitro-3'-phenyl-2,2'-spirobi�2H-1-benzopyran!; 6-bromo-6'-nitro-3-phenyl-2,2'-spirobi�2H-1-benzopyran!; 6-bromo-3'-phenyl-2,2'-spirobi�2H-1-benzopyran!; 3-benzyl-2,2'-spirobi�2H-1-benzopyran!; 3-butyl-2,2'-spirobi�2H-1-benzopyran!; 6-chloro-6'-nitro-3-phenyl-2,2'-spirobi�2H-1-benzopyran!; 8-chloro-6-nitro-3'-phenyl-2,2'-spirobi�2H-1-benzopyran!; 6,6'-dibromo-3,3'-dimethylene-2,2'-spirobi�2H-1-benzopyran!; 8,8'-dimethoxy-6'-nitro-3-phenyl-2,2'-spirobi�2H-1-benzopyran!; 3,3'-dimethyl-2,2'-spirobi�2H-1-benzopyran!; 6,6-dimethyl-3',3'-dimethylene-2,2'-spirobi�2H-1-benzopyran!; 3,3'-dimethylene-2,2'-spirobi�2H-1-benzopyran!; 6,6'-dinitro-3,3'-diphenyl-2,2'-spirobi�2H-1-benzopyran!; 3,3'-diphenyl-2,2'-spirobi�2H-1-benzopyran!; 3-ethyl-2,2'-spirobi�2H-1-benzopyran!, 8-fluoro-6-nitro-3'-phenyl-2,2'-spirobi�2H-1-benzopyran!; 8-iodo-6-nitro-3'-phenyl-2,2'-spirobi�2H-1-benzopyran!; 8'-methoxy-3-methyl-6-nitro-2,2'-spirobi�2H-1-benzopyran!; 8-methoxy-6-nitro-3'-phenyl-2,2'-spirobi�2H-1-benzopyran!; 8-methoxy-6'-nitro-3-phenyl-2,2'-spirobi�2H-1-benzopyran!; 8-methoxy-8'-nitro-3-phenyl-2,2'-spirobi�2H-1-benzopyran!; 8'-methoxy-6-nitro-3-phenyl-2,2'-spirobi�2H-1-benzopyran!; 3-methyl-2,2'-spirobi�2H-1-benzopyran!; 3-methyl-6-nitro-2,2'-spirobi�2H-1-benzopyran!; 6-nitro-3'-phenyl-2,2'-spirobi�2H-1-benzopyran!; 3-phenyl-2,2'-spirobi�2H-1-benzopyran!; 3,3'-tetromethylene-2,2'-spirobi�2H-1-benzopyran!; 3,3'-trimethylene-2,2'-spirobi�2H-1-benzopyran!; 3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-amyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-benzyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-butyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-chloro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-chloro-8,8'-dinitro-3,3'-spirobi�3H-naphtho2,1-b!pyran!; 2-decyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 8,8'-dibromo-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-dicarboethoxy-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-dicarbomethoxy-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-diethyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 5,5'-dimethoxy-3,3'-spirobi�3H-naphtho�2,1-b!pyran!, 5,5'-dimethoxy-8,8'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 5,5'-dimethoxy-10,10'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!, 9,9'-dimethoxy-8,8'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-dimethyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-dimethyl-8,8'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 5,5'-dimethyl-10,10'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 9,9'-dimethyl-8,8'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 9,9-dimethyl-7,7'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-(.gamma.,.gamma.-dimethylallyl)-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-dimethylene-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 7,7'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 8,8'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 9,9'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 10,10'-dinitro-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 8,8'-dinitro-2-methyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 8,8'-dinitro-2,2'-1(2"-methyl)trimethylene-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 8,8'-dinitro-2-phenyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 8,8'-dinitro-2,2'-trimethylene-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-diphenyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-ethyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-heptyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-hexyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-isobutyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-isopropyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-methyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-(2"-methyl)trimethylene-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 8'-nitro-2-phenyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-octyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-phenyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-(.beta.-phenylethyl)-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2-propyl-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-tetramethylene-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-trimethylene-3,3'-spirobi�3H-naphtho�2,1-b!pyran!; 2,2'-spirobi�2H-naphtho�1,2-b!pyran!; 3-amyl-2,2'-spirobi�2H-naphtho�1,2-b!pyran!; 6,6'-dichloro-2,2'-spirobi�2H-naphtho�1,2-b!pyran!; 7,7'-dinitro-2,2'-spirobi�2H-naphtho�1,2-b!pyran!; 8,8'-dinitro-2,2'-spirobi�2H-naphtho�1,2-b!pyran!; 9,9'-dinitro-2,2'-spirobi�2H-naphtho�1,2-b!pyran!; 10,10'-dinitro-2,2'-spirobi�2H-naphtho�1,2-b!pyran!; 3-phenyl-2,2'-spirobi�2H-naphtho�1,2-b!pyran!; 2,2'-spirobi�2H-naphtho�2,3-b!pyran!; spiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-amylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-amylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-amyl-6-bromospiro�2H-1-benzopyran-2,3'-�3H 1-naphtho�2,1-b!pyran!; 3-amyl-7-chlorospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-amyl-6-hydroxyspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!, 3-amyl-6-methoxyspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-amyl-7-methoxyspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-amyl-6-methylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-amyl-7-methylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-amyl-6-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-benzylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-benzylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 6-bromospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 6-bromo-8-methoxy-3-methyl-8'-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8'-bromo-8-methoxy-3-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 6-bromo-3-methyl-8'-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 6-bromo-8'-nitro-3-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8'-bromo-3-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!, 6-chloro-8-methoxy-3-methyl-8'-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 6-chloro-3-methylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 6-chloro-3-methyl-8'-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8-chloro-3-methyl-8'-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 6-chloro-8'-nitro-3-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 7-diethylamino-3-methyl-8'-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 5,7-dimethoxy-8'-nitro-3-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2',3-dimethylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2',3'-dimethylenespiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 6-fluoro-3-methyl-8'-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2-isopropylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-isopropylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8-methoxy-2'-methylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8-methoxy-2'-methyl-8'-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8-methoxy-3-methyl-6-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8-methoxy-3-methyl-8'-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 7-methoxy-2'-methyl-4-phenylspiro�2H-1-benzopyran-2,3'-13H!-naphtho�2,1-b!pyran!; 7-methoxy-3-methyl-4-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8-methoxy-8'-nitro-3-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-methylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-methylspiro�2H-1-benzopyran-2,3'-(3H!-naphtho�2,1-b!pyran!; 6-methylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-methyl-6-nitrospiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-methyl-4-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8'-nitro-3-(o-nitrophenyl)spiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 8'-nitro-3-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-octylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-phenylspiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-(.beta.-phenylethyl)spiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-(.beta.-phenylethyl)spiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2',3-trimethylenespiro�2H-1-benzopyran-2,3'-�3H!-naphtho�2,1-b!pyran!; spiro�2H-1-benzopyran-2,2'-�2H!-naphtho 1,2-b!pyran!; 3-amylspiro�2H-1-benzopyran-2,2'-�2H!-naphtho�1,2-b!pyran!; 3'-amylspiro�2H-1-benzopyran-2,2'-�2H!-naphtho�1,2-b!pyran!; 3-amyl-6-bromospiro�2H-1-benzopyran-2,2'-�2H!-naphtho�1,2-b!pyran!; 3-amyl-6-methoxyspiro�2H-1-benzopyran-2,2'-�2H!-naphtho�1,2-b!pyran!; 3-amyl-6-methylspiro�2H-1-benaphtho�2,2'-�2H!-naphtho�1,2-b!pyran!; 3-amyl-6-nitrospiro�2H-1-benzopyran-2,2'-�2H!-naphtho�1,2-b!pyran!; 6'-chloro-8-methoxy-3-phenylspiro�2H-1-benzopyran-2,2'-�2H!-naphtho�1,2-b!pyran!; 3'-methyl-4'-phenylspiro�2H-1-benzopyran-2,2'-�2H3-naphtho�1,2-b!pyran!; 3-phenylspiro�2H-1-benzopyran-2,2'-�2H!-naphtho�1,2-b!pyran!; 3'-phenylspiro�2H-1-benzopyran-2,2'-�2H!-naphtho�1,2-b!pyran!; spiro�3H-anthraceno�2,1-b!pyran-3,2'-�2H!-1-benzopyran!; spiro�2H-1-benzopyran-2,2'-�2'H!phenanthreno�2,1-b!pyran!; spiro�3H-anthraceno�2,1-b!pyran-3,3'-�3H!naphtho�2,1-b!pyran!; spiro�3H-naphtho�2,1-b!pyran-3,2'-�2'H!phenanthreno�2,1-b!pyran!; 2,2'-spirobi�2H-phenanthreno�2,1-b!pyran!; spiro�4H-1-benzopyran-4,3'-�3H!naphtho�2,1-b!pyran!; 2,3-diphenyl-7-methoxyspiro�4H-1-benzopyran-4,3'-�3H!naphtho�2,1-b!pyran!; 2,3-diphenyl-7-methoxy-8'-nitrospiro�4H-1-benzopyran-4,3'-�3H!naphtho�2,1-b!pyran!; 2,3-diphenyl-8'-nitrospiro�4H-1-benzopyran-4,3'-�3H!naphtho�2,1-b!pyran!; 7-methoxy-3-methyl-8'-nitro-2-phenylspiro�4H-1-benzopyran-4,3'-�3H!naphtho�2,1-b!pyran!; 6-methoxy-3-methyl-2-phenylspiro�4H-1-benzopyran-4,3'-�3H!naphtho�2,1-b!pyran!; 7-methoxy-3-methyl-2-phenylspiro�4H-1-benzopyran-4,3'-�3H!naphtho�2,1-b!pyran!; 3-(p-methoxyphenyl)-8'-nitro-2-phenylspiro�4H-1-benzopyran-4,3'-�3H!naphtho�2,1-b!pyran!; 3-methyl-2-phenylspiro�4H-1-benzopyran-4,3'-�3H!naphtho�2,1-b!pyran!; spiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-amylspiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-amylspiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2',3-dimethyl-4-phenylspiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-3-dimethylenespiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-methyl-4-phenylspiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-methyl-4-phenylspiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2'-phenylspiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 3-phenylspiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 4-phenylspiro�2H-naphtho 1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; 2',3-trimethylenespiro�2H-naphtho�1,2-b!pyran-2,3'-�3H!-naphtho�2,1-b!pyran!; spiro�4H-napththo�1,2-b!pyran-4,3'-�3H!naphtho�2,1-b!pyran!; 3-methyl-8'-nitro-2-phenylspiro�4H-napththo�1,2-b!pyran-4,3'-�3H!naphtho�2,1-b!pyran!; spiro�2H-1-benzopyran-2,9'-xanthene!; 6,8-dinitrospiro�2H-1-benzopyran-2,9'-xanthene!; 3'-hydroxy-6-nitrospiro�2H-1-benzopyran-2,9'-xanthene!; 6-nitrospiro�2H-1-benzopyran-2,9'-xanthene!; 8-nitrospiro�2H-1-benzopyran-2,9'-xanthene!; spiro�3H-naphtho�2,1-b!pyran-3,9'-xanthene!; 2-methylspiro�3H-naphtho�2,1-b!pyran-3,9'-xanthene!; 8-nitrospiro�3H-naphtho�2,1-b!pyran-3,9'-xanthene!; spiro�3H-naphtho�2,1-b!pyran-3,2'-�2H!pyran; 4',6'-diphenylspiro�3H-naphtho�2,1-b!pyran-3,2'-�2H!pyran; spiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 6-bromo-1,3,3-trimethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 5-chloro-1,3,3,6'-tetramethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 5-chloro-1,3,3,9'-tetramethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 5-chloro-1,3,3-trimethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 3,3-dimethyl-1-ethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 3,3-dimethyl-1-propylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 1-ethyl-3,3,6'-trimethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 5-fluoro-1,3,3,6'-tetramethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 5-fluoro-1,3,3-trimethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 1,3,3,6',7-pentamethylspiro indoline-2,2'-pyrano�3,2-H!quinoline!; 1,3,3,7,9'-pentamethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 1-propyl-3,3,6'-trimethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 1,3,3,7-tetramethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; 1,3,3,9'-tetramethylspiro�indoline-2,2'-pyrano�3,2-H!quinoline!; spiro�indoline-2,3'-�3H!-naphtho�2,1-b!-1,4-oxazine!; 5-chloro-1,3,3-trimethylspiro�indoline-2,3'-�3H!-naphtho�2,1-b!-1,4-oxazine!1,3,3-trimethylspirolindoline-2,3'-�3H!-naphtho�2,1-b!-1,4-oxazine!; spiro�indoline-2,2'-�2H!-pyrano�3,4-b!pyridine!, 5'-hydroxymethyl-1,3,3,8'-tetramethylspiro�indoline-2,2'-�2H!-pyrano�3,4-b!pyridine!; spiro�indoline-2,2'-�2H!-pyrano�3,2-b!pyridine!; 5-chloro-1,3,3-trimethylspiro�indoline-2,2'-�2H!-pyrano�3,2-b!pyridine!; spiro�indoline-2,2'-�2H!-pyrano�3,2-c!quinoline!; 1,3,3,5'-tetramethylspiro�indoline-2,2'-�2H!-pyrano�3,2-c!quinoline!; spiro�2H-1,4-benzoxazine-2,2'-indoline!; 1',3',3'-trimethylspiro�2H-1,4-benzoxazine-2,2'-indoline!; spiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 6-bromo-3-isopropyl-1'-methylspiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 6-bromo-1'-methylspiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 3,3'-dimethylene-1'-methylspiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 1'-ethylspiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 1'-ethyl-6-nitrospiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 1'-ethyl-8-nitrospiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 6-methoxy-1'-methylspiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 7-methoxy-1'-methylspiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 1'-methylspiro�2H-1-benzopyran2,2'-(2H!quinoline!; 1'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-�2H1quinoline!; 1'-methyl-3,3'-trimethylenespiro�2H-1-benzopyran-2,2'-�2H!quinoline!; 6-nitro-1',3,3'-trimethylspiro�2H-1-benzopyran-2,2'-�2H!quinoline!; spiro�3H-naphtho2,1-b!pyran-3,2'-�2H!quinoline!; 2-isopropyl-1'-methylspiro�3H-naphtho�2,1-b!pyran-3,2'-2H!quinoline!: 1'-methylspiro�3H-naphtho�2,1-b!pyran-3,2'-�2H quinoline!; spiro�2H-1-benzopyran-2,2'-�2H!pyridine!; 6-bromo-1'-methylspiro�2H-1-benzopyran-2,2'-�2H!pyridine!; 1',3-dimethyl-6-nitrospiro�2H-1-benzopyran-2,2'-�2H!pyridine!; 6,8-dinitro-1'-methyl-3-phenylspiro�2H-1-benzopyran-2,2'-2H!pyridine!; 1'-ethylspiro�2H-1-benzopyran-2,2'-�2H!pyridine!; 3-ethyl-1'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-�2H!pyridine!; 1'-ethyl-6-nitrospiro�2H-1-benzopyran-2,2'-�2H!pyridine!; 1'-ethyl-8-nitrospiro�2H-1-benzopyran-2,2'-�2H!pyridine!; 7-methoxy-1'-methylspiro�2H-1-benzopyran-2,2'-�2H!pyridine!; 1'-methylspiro�2H-1-benzopyran-2,2'-�2H!pyridine!; 1'-methyl-6-nitrospiro�2H-1-benzopyran-2,2'-2H!pyridine!; spiro�3H-naphtho�2H!pyran-3,2'-�2H!pyridine!; 1'-methylspiro�3H-naphtho�2,1-b!pyran-3,2'-�2H!pyridine!; 1',4',6'-triphenylspiro�3H-naphtho�2,1-b!pyran-3,2'-�2H!pyridine!; spiro�acridine-9,2'-�2H!benzopyran!; 8'-methoxy-10-methylspiro�9H-acridine-9,2'-�2H!benzopyran!; 10-methylspiro�9H-acridine-9,2'-�2H benzopyran!; spiro�9H-acridine-9,3'-�3H!naphtho�2,1-b!pyran!; 10-methylspiro�9H-acridine-9,3'-�3H!naphtho�2,1-b!pyran!, spiro�indoline-2,2'-�2H!pyrano�2,3-b!indole!; 5-chloro-1,3,3,9'-tetramethylspiro�indoline-2,2'-�2H!pyrano�2,3-b!indole!; spiro�indoline-2,2'-�2H!pyrano�3,2-b!indole!; 5-chloro-1,3,3-trimethylspiro�indoline-2,2'-�2H pyrano�3,2-b!indole!; spiro�indoline-2,2'-�2H!pyrano�2,3-b!benzofuran!; 1,3,3-trimethylspiro�indoline-2,2'-(2H!pyrano�2,3-b!benzofuran!; spiro�indoline-2,2'-�2H!pyrano�3,2-b!benzofuran!; 5-chloro-1,3,3-trimethylspiro�indoline-2,2'-�2H!pyrano�3,2-b!benzofuran!; spiro�2H-1-benzothieno�2,3-b!pyran-2,2'-indoline!; 5'-chloro-1',3',3'-trimethylspiro�2H-1-benzothieno�2,3-b!pyran-2,2'-indoline!; spiro�2H!-1-benzothieno�3,2-b!pyran-2,2'-indoline!; 5'-chloro-1',3',3'-trimethylspiro�2H!-1-benzothieno�3,2-b!pyran-2,2'-indoline!; spiro�3H-naphtho�2,1-b!pyran-3,9'-thioxonthene!; 4'-chloro-8-nitrospiro�3H-naphtho�2,1-b!pyran-3,9'-thioxanthene!; spiro�2H,8H-benzo�1,2-b:-3,4-b'!dipyran-8-2'-indoline!-2-one; 1',3',3',4-tetramethylspiro�2H,8H-benzo�1,2-b:-3,4-b'!dipyran-8-2'-indoline)-2-one; spiro�2H-1-benzopyran-2,2'-oxazoline!; 3'-methyl-6-nitro-5'-phenylspiro�2H-1-benzopyran-2,2'-oxazoline!, spiro�2H-1-benzothiopyran-2,2'-indoline!; 1,3',3'-trimethylspiro�2H-1-benzothiopyran-2,2'-indoline!; spiro�3H-naphtho�2,1-b!pyran-3,2'-thiazoline!; 4',5'-dihydro-2,3'-dimethylspiro�3H-naphtho2,1-b!pyran-3,2'-thiazoline!; m-dithiino�5,4b:5,6-b'!bis�1!benzopyranspiro�3H-naphtho�2,1-b!pyran-3,2'-thiazoline!; 6H,8H-thiopyrano�4,3-b:4,5-b'bis�1!benzopyranspiro�3H-naphtho�2,1-b!pyran-3,2'-thiazoline!; 6H,8H-bisnaphtho 1',2':5,6!pyrano�3.2-c:2',3'-d!thiopyranspiro�3H-naphtho�2,1-b!pyran-3,2'-thiazoline!; spiro�2H-1-benzopyran-2,1'-isoindoline!; 6-nitro-2',3',3'-trimethylspiro�2H-1-benzopyran-2,1'-isoindoline!; spiro�indoline-2,3'-�3H!pyrano-�3,2-a!xanthene!-12'-one; 5-chloro-3',12'-dihydro-1,3,3-trimethylspiro�indoline-2,3'-�3H!pyrano-�3,2-a!xanthene!-12'-one; and mixtures thereof, (3) a third component which is a charge control agent, (4) an optional fourth component which is a colored dye, and (5) an optional fifth component which is a colored pigment.
- 20. A toner composition according to claim 1 wherein
- the photochromic material is of the formula ##STR29## wherein X is a sulfur atom, a selenium atom, an oxygen atom, a --CH.sub.2 -- group, a --CHR.sup.1 -- group, or a --CR.sup.1 R.sup.2 -- group, and wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, and R.sup.11 each, independently of the others, are hydrogen atoms, alkyl groups, aryl groups, arylalkyl groups, silyl groups, nitro groups, cyano groups, halide atoms, amine groups, hydroxy groups, alkoxy groups, aryloxy groups, alkylthio groups, arylthio groups, aldehyde groups, ketone groups, ester groups, amide groups, carboxylic acid groups, and sulfonic acid groups, wherein two or more R groups can be joined together to form a ring.
Parent Case Info
This application is a continuation of application Ser. No. 08/567,589, filed Dec. 5, 1995 now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (5)
Number |
Date |
Country |
0459792 |
Apr 1991 |
EPX |
0469864 |
May 1992 |
EPX |
1-103631 |
Apr 1989 |
JPX |
3-287174 |
Dec 1991 |
JPX |
7-281473 |
Oct 1995 |
JPX |
Non-Patent Literature Citations (4)
Entry |
Aldrich Catalog, p. 540, 1996. |
Diamond, Arthur S. Handbook of Imaging Materials,. Marcel-Dekker, Inc. NY., pp. 168-169, 1991. |
English translation of JP 7-281473, Oct. 1995. |
English translation of JP 1-103631, Apr. 1989. |
Continuations (1)
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Number |
Date |
Country |
Parent |
567589 |
Dec 1995 |
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