BASE-CATALYZED DEHYDRATION OF SUBSTITUTED CIS-1,2-DIHYDROXYCYCLOHEXA-3,5-DIENES

摘要

A process for dehydrating compounds of the formula where -R is -CH=CH2, -C 3BOND CH -C 3BOND N or in an aqueous solution thereof is disclosed. In the case where R is -CH=CH2 or -C=CH, the temperature is preferably at least 50 DEG C. and preferably 75 DEG to 100 DEG C. The base is at least 0.1N and preferably 1.0 to 8N. Preferred bases are NaOH, KOH and C5OH. In the case where -R is C 3BOND N, the temperature preferably is 20 DEG to 50 DEG C.