The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 1987
Filed:
Feb. 14, 1985
Applicant:
Inventor:
Werner Stegmann, Liestal, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568316 ;
Abstract
The invention relates to a novel process for producing compounds of the formula I ##STR1## in which R.sup.1 is for example phenyl, and R.sup.2 and R.sup.3 are for example cyclohexyl. With application of the phase-transfer catalysis method, a corresponding compound of the formula II ##STR2## is reacted, in the presence of water, with hydroxide ions, especially with alkali metal hydroxide or alkaline-earth metal hydroxide.