反应详情

ethyl 2-(2-ethoxyethoxyimino)-3-oxobutyrate (syn isomer 56 g.), sulfuryl chloride (32.7 g.) and acetic acid (56 ml.) were treated in a similar manner to that of Example A-(2) to give ethyl 4-chloro-2-(2-ethoxyethoxyimino)-3-oxobutyrate (syn isomer, 57.1 g.).