反应详情

A solution of ethyl 2-benzyloxyimino-3-oxobutyrate (syn isomer, 56.0 g.), sulfuryl chloride (40.5 g.) and acetic acid (80 ml.) was treated in a similar manner to that of Example A-(2) to give ethyl 2-benzyloxyimino-4-chloro-3-oxobutyrate (syn isomer, 54.6 g.).