Patent ID: 6271378
Filing Date: 2001-08-07
Classification: C07D,C07F

Abstract:
A process for preparing a compound having the formula: ##STR30##wherein R.sup.1 is selected from the group consisting of: alkyl, alkenyl, alkynyl, aryl, aralkyl, cycloalkyl, and cycloalkylalkyl, R.sup.1 being optionally substituted by substituents selected from halo, --OH, alkyl, alkoxy, or --CF.sub.3, said process comprising the following steps:(a) reacting a ketone having the formula ##STR31##with a carbanion having the formula ##STR32##wherein R.sup.1 is as defined above, and R.sup.2 and R.sup.3 are independently selected from the group consisting of --OR.sup.A and --R.sup.A, wherein R.sup.A is alkyl, phenyl, substituted phenyl, cycloalkyl, substituted cycloalkyl, cycloalkylalkyl, or substituted cycloalkylalkyl;(b) treating the reaction mixture from step (a) with a protonating agent; and(c) thermally decomposing the protonated product from step (b) to form the compound of formula (I).