反应详情

Ethyl 2-hydroxyimino-3-oxobutyrate (syn isomer, 17.0 g.), 2,4-dichlorobenzyl chloride (25 g.), potassium carbonate (22.0 g.), N,N-dimethylformamide (25 ml.) and ethyl acetate (25 ml.) were treated in a similar manner to that of Example A-(1) to give ethyl 2-(2,4-dichlorobenzyloxyimino)-3-oxobutyrate (syn isomer, 33.7 g.)