Methanol → alpha-(3,4-Dimethoxy-benzal)-beta-methoxy-propionitrile

Participants

Reaction Conditions

Reaction Steps

A mixture of 200 g (1.20 mole) of 3,4-dimethoxy-benzaldehyde, 150 g (1.75 mole) of β-methoxy-propinitrile, 260 ml of methanol and 10 g of a 55% methanolic potassium hydroxide solution is stirred at 60°-62° C. for 8 hours, whereupon the reaction mixture is cooled to 30° C., and 170 g of a 55% methanolic potassium hydroxide solution are added dropwise. The reaction mixture is stirred for 5 hours and diluted with 1000 ml of water. The precipitated crystalline product is filtered, washed with methanol and water. Thus 280 g of α-(3,4-dimethoxy-benzal)-β-methoxy-propionitrile are obtained, yield 85%, mp.: 82°-83° C.

Provenance & Evidence