反应详情

10.5 G. of 4'-chloro-2-hydroxy-4-methoxy-benzophenone imine in 60 ml. of ethanol is reacted with 12.6 g. of aminomalonic acid diethyl ester hydrochloride and 5.0 ml. of pyridine in accordance with the procedure described in Example 2. After a single recrystallization of the crude product from ethanol, there is obtained {[2-hydroxy-4-methoxy-α-(4-chlorophenyl)benzyliden]amino}malonic acid diethyl ester, having a melting point of 73°-75° C.

1. customAfter a single recrystallization of the crude product from ethanol