Patent ID: 6265600
Filing Date: 2001-07-24
Classification: C07C,G03C

Abstract:
A method for the production of an activated propene of the formula (I) ##STR14##wherein D represents a group of the formula Ar--L--wherein Ar is a phenyl group, optionally substituted with one or more substituents, and --L-- is a linking group incorporating a lone pair of electrons, and wherein the substituents A, B and E each individually represent hydrogen or an electron withdrawing group, and X is hydrogen or a group releasable during a coupling reaction, with the proviso that at least one of A, B and E is a nitrile group; which comprises subjecting a substituted imidate of the formula (III) ##STR15##wherein F is a C.sub.1 to C.sub.6 alkoxy group and Ar is a substituted or unsubstituted aryl group, to a condensation reaction conducted under a nitrogen atmosphere in the presence of a base and an activated methylene compound.