PREPARATION OF XU-CYANO DERIVATIVES OF B-UALCOXYCARBOXYLIC ACID ESTERS

摘要

1385637 #-Cyano derivatives of #-alkoxycarboxylic acid esters STAMICARBON BV 14 Sept 1973 [16 Sept 1972] 43250/73 Heading C2C The invention comprises #-cyano derivatives of #-alkoxycarboxylic acid esters of general formula where n is an integer of from 1 to 5, each R is independently a C 1 to C 10 alkyl or cycloalkyl group, and R 1 and R 2 are independently hydrogen or a C 1 to C 10 alkyl or cycloalkyl group. They may be'prepared by reacting an #-cyanoacetal of general formula with a ketene of general formula preferably in the presence of a Lewis acid as catalyst.