PROCESS FOR PRODUCING PHOSPHORUS-CONTAINING DEHYDROAMINO ACID

摘要

A process for efficiently producing through a small number of steps an N-substituted 2-amino-4-(substituted-oxymethylphosphinyl)-2-butenoic ester which is an intermediate for herbicide L-AMPB. The process includes reacting a compound represented by the following formula (1): (wherein R¹ represents C_1-4 alkyl) with a compound represented by the following formula (2): (wherein R², R^2', and R³ each represents C_1-4 alkyl and R⁴ represents benzyloxycarbonyl) in the presence of a base.