4-Chlorobenzaldehyde → HCID 54198477, compound

Participants

Reaction Steps

p-Chlorobenzaldehyde (3.5 g., 0.025 mole) in ethanol (10 ml.) is added to a solution of 4-(m-chlorobenzyl)-4-phenyl-5-oxohexanoic acid (4.89 g., 0.015 mole) and sodium hydroxide (0.8 g., 0.02 mole) in water (50 ml.). The resulting mixture is heated on a steam bath for 24 hours. The reaction solution is cooled to room temperature, diluted with water (200 ml.) and extracted with ether to remove the excess p-chlorobenzaldehyde. Ether is expelled from the aqueous phase by warming. The solution is cooled in an ice bath, acidified with dilute hydrochloric acid (10 ml.), and the white solid which precipitates is collected and air-dried to yield 5.05 g., m.p. 65°-130°C. Several recrystallizations from n-butyl chloride and petroleum ether (30°-60°C.) give a material with m.p. 137°-139°C.

Provenance & Evidence