Claims
- 1. A process for preparing a compound of the formula ##STR8## wherein R is selected from the group consisting of hydrogen, methyl, chlorine and fluorine; and
- R.sup.1 is SO.sub.3 M wherein M represents sodium comprising reacting anhydrous camphosulfonic acid with sodium methylate in an inert solvent, and reacting the resulting product with an aromatic aldehyde selected from the group consisting of benzaldehyde, p-tolualdehyde, monochlorobenzaldehyde and monofluorobenzaldehyde in an inert solvent.
- 2. A process for preparing 3-benzylidene-2-oxo-10 bornane sulfonic acid comprising reacting anhydrous camphosulfonic acid with sodium methylate in an inert solvent, reacting the resulting product with benzaldehyde in an inert solvent, dissolving the resulting compound in water and adding concentrated hydrochloric acid in an amount sufficient to precipitate said 3-benzylidene-2-oxo-10 bornane sulfonic acid.
- 3. A process for preparing a compound of the formula ##STR9## wherein R is selected from the group consisting of hydrogen and methyl; and
- R' is SO.sub.3 M wherein M represents sodium comprising reacting anhydrous camphosulfonic acid with sodium methylate in an inert solvent, and reacting the resulting product with an aromatic aldehyde selected from the group consisting of benzaldehyde and p-tolualdehyde in an inert solvent.
- 4. The process of claim 3 wherein the aldehyde is benzaldehyde.
- 5. The process of claim 3 wherein the aldehyde is p-tolualdehyde.
- 6. The process of claim 3 which includes dissolving the resulting compound in water and adding thereto sufficient HCl to precipitate the sulfonic acid derivative of said compound.
Priority Claims (1)
Number |
Date |
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67061 |
Feb 1973 |
LUX |
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CROSS-REFERENCE TO RELATED APPLICATIONS
The present application is a continuation application of our application Ser. No. 922,083, filed July 5, 1978, now abandoned, which is a division of application Ser. No. 497,469, filed Aug. 14, 1974, now U.S. Pat. No. 4,165,336 which, in turn is a continuation-in-part of application Ser. No. 440,570, filed Feb. 7, 1974, now abandoned, the subject matter of which is expressly incorporated herein by reference.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3781417 |
Welters et al. |
Dec 1973 |
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Non-Patent Literature Citations (4)
Entry |
Haller, "Compte Rendu de l'Academie des Sciences" 1891; 2.degree. Semestre, Tome 113, No. 1, pp. 22-26. |
Zviak et al, German Offen. 1,913,489 Abstracted in Chem. Abstract, 72, 35,683p (1970). |
Shriner et al, JACS., 60, 1314 (1938). |
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd Rev. Ed., vol. 19, p. 512, 1969. |
Divisions (1)
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Number |
Date |
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497469 |
Aug 1974 |
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Continuations (1)
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Number |
Date |
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Parent |
922083 |
Jul 1978 |
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Continuation in Parts (1)
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440570 |
Feb 1974 |
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