2-Chlorobenzaldehyde → HCID 1109367, compound

Participants

Reaction Steps

A stirred solution of 11.3 g. (0.1 mole) of 1-methyl-4-piperidinone and 28 g. (0.2 mole) of o-chlorobenzaldehyde in 220 ml. of ethanol is treated with 11 g. (0.17 mole) of 85% KOH. The temperature rises to 34° and after approximately 2 minutes a solid begins to separate. After stirring for 30 minutes the yellow solid is filtered, washed with water, and air-dried to yield 31.6 g. of yellow, 3,5-bis[(2-chlorophenyl)methylene]-1-methyl-piperidinone; m.p. 148°-150°.

Provenance & Evidence