Malonic esters

摘要

A process for the preparation of new malonic esters of the formula: <IMAGE> wherein R is a substituted or unsubstituted C1 to C6 alkyl, a substituted or unsubstituted aromatic ring, a heterocyclic ring, a cycloalkyl group, or a fused ring system; R1 is hydrogen, lower alkyl, aralkyl, aralkyl substituted by halogen or alkyl or a substituted aromatic, cycloaliphatic or heterocyclic ring; and X is halogen.