反应详情

29.7 g (300 millimoles) of ethyl cyanoacetate were added to a solution of 55.7 g (300 millimoles) of 2-chloro-5-nitrobenzaldehyde in 200 ml of tetrahydrofuran, after which 1 ml of piperidine was added as a catalyst at 0° C. The mixture was stirred for 16 hours at room temperature, neutralized with acetic acid and then worked up in a conventional manner to give a product of melting point 83°-85° C. in 71% yield.

1. customto give a product of melting point 83°-85° C. in 71% yield