Claims
- 1. A squarylium compound having formula (I): ##STR30## wherein R.sup.1 and R.sup.2 independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, an aralkyl group, or an aryl group, or R.sup.1 and R.sup.2 form a benzene ring, heterocyclic ring formed by --CH.dbd.CH--O--, .dbd.CH--O--CH.dbd., --N.dbd.CH--S--, --CH.dbd.CH--S--, .dbd.CH--S--CH.dbd., --S--CH.dbd.CH-- or --O--CH.dbd.CH-- or alkylene ring formed by alkylene moiety having 3 to 4 carbon atoms which may have a substituent, in combination with two adjacent carbon atoms in the ring to which R.sup.1 and R.sup.2 are bonded;
- R.sup.3 represents an alkyl group having 1 to 4 carbon atoms, an aralkyl group, an aryl group or an alkoxyl group having 1 to 8 carbon atoms; n is an integer of 0 to 3, and when n is 2 or 3, R.sup.3 s may be the same or different, or form a benzene ring, heterocyclic ring formed by --CH.dbd.CH--O--, .dbd.CH--O--CH.dbd., --N.dbd.CH--S--, --CH.dbd.CH--S--, .dbd.CH--S--CH.dbd., --S--CH.dbd.CH-- or --O--CH.dbd.CH-- or alkylene ring formed by alkylene moiety having 3 to 4 carbon atoms which may have a substituent, in combination with two adjacent carbon atoms in the ring to which R.sup.3 s are bonded;
- R.sup.4 and R.sup.5 independently represent an alkyl group having 1 to 4 carbon atoms;
- R.sup.6 represents an alkyl group having 1 to 4 carbon atoms, an aralkyl group or an aryl group;
- R.sup.7 represents a halogen, an alkyl group having 1 to 4 carbon atoms, an aralkyl group, an aryl group or an alkoxyl group having 1 to 4 carbon atoms; m is an integer of 0 to 4, and when m is 2, 3 or 4, R.sup.7 s may be the same or different, or form a benzene ring, heterocyclic ring formed by --CH.dbd.CH--O--, .dbd.CH--O--CH.dbd., --N.dbd.CH--S--, --CH.dbd.CH--S--, .dbd.CH--S--CH.dbd., --S--CH.dbd.CH-- or --O--CH.dbd.CH-- or alkylene ring formed by alkylene moiety having 3 to 4 carbon atoms which may have a substituent, in combination with two adjacent carbon atoms in the ring to which R.sup.7 s are bonded.
- 2. The squarylium compound as claimed in claim 1, wherein said alkyl group represented by R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, or R.sup.7 is selected from the group consisting of a methyl group, an ethyl group, a propyl group, an isopropyl group, a n-butyl group, and an isobutyl group.
- 3. The squarylium compound as claimed in claim 1, wherein said alkoxyl group represented by R.sup.3 or R.sup.7 is selected from the group consisting of a methoxy group, an ethoxy group, and an isopropoxy group.
- 4. The squarylium compound as claimed in claim 1, wherein said aralkyl group represented by R.sup.1, R.sup.2, R.sup.3, R.sup.6, or R.sup.7 has 7 to 10 carbon atoms.
- 5. The squarylium compound as claimed in claim 1, wherein said aryl group represented by R.sup.1, R.sup.2, R.sup.3, R.sup.6, or R.sup.7 is selected from the group consisting of a phenyl group, and a naphthyl group.
- 6. The squarylium compound as claimed in claim 1, wherein said halogen atom represented by R.sup.7 is selected from the group consisting of chlorine, bromine, and fluorine.
- 7. The squarylium compound as claimed in claim 1, wherein said heterocyclic ring formed by R.sup.1 and R.sup.2, R.sup.3 s or R.sup.7 comprises a moiety comprising oxygen, nitrogen or sulfur, with the moiety formed by R.sup.1 --R.sup.2, R.sup.3 --R.sup.3 or R.sup.7 --R.sup.7 being selected from the group consisting of --CH.dbd.CH--O--, .dbd.CH--O--CH.dbd., --N.dbd.CH--S--, --CH.dbd.CH--S--, .dbd.CH--S--CH.dbd., --S--CH.dbd.CH--, and --O--CH.dbd.CH--.
- 8. The squarylium compound as claimed in claim 1, wherein the moiety formed by R.sup.1 --R.sup.2, R.sup.3 --R.sup.3 or R.sup.7 --R.sup.7 in said alkylene ring formed by R.sup.1 and R.sup.2, R.sup.3 s or R.sup.7 s is an alkylene moiety having 3 to 4 carbon atoms.
- 9. The squarylium compound as claimed in claim 1, wherein said substituent of said benzene ring, heterocyclic ring or alkylene ring represented by R.sup.1 and R.sup.2, R.sup.3 s or R.sup.7 s is selected from the group consisting of a halogen, an alkyl group having 1 t 4 carbon atoms, an aralkyl group and an aryl group.
Priority Claims (1)
Number |
Date |
Country |
Kind |
63-106944 |
Apr 1988 |
JPX |
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Parent Case Info
This is a division of application Ser. No. 495,715 filed Mar. 16, 1990, now U.S. Pat. No. 4,085,909 which is a continuation-in-part of application Ser. No. 341,325 filed Apr. 20, 1989, now abandoned.
Non-Patent Literature Citations (3)
Entry |
CA 113: 32042h, Squarylium . . . materials, Satoh et al., p. 542, 1990. |
CA 110(20): 183054c, Abstract of JP 63-49490 (Mar. 2, 1988), Sakai et al. |
CA 109(16): 139346e, Abstract of JP 63-49488 (Mar. 2, 1988), Nishimura et al. |
Divisions (1)
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Number |
Date |
Country |
Parent |
495715 |
Mar 1990 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
341325 |
Apr 1989 |
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