Triethylamine → m-Methoxycarbonyl-alpha-[4-(3,4-dimethoxybenzoyl)-1-piperazinyl]acetanilide

Participants

Reaction Steps

5 Grams of methyl m-(α-chloroacetylamino)benzoate, 7.56 g of N-(3,4-dimethoxybenzoyl)piperazine monohydrochloride, 7.76 g of triethylamine and 30 ml of acetonitrile were mixed together and reacted at 45° to 50° C. for 5 hours. After completion of the reaction, the reaction mixture was ice-cooled, and the crystals formed were removed by filtration. The mother liquor was concentrated to dryness, and extracted by adding 1 N-sodium hydroxide aqueous solution and chloroform. The chloroform layer was washed with water, dried and removed by distillation. The oily substance obtained was purified by a silica gel column chromatography to obtain 10.08 g of m-methoxycarbonyl-α-[4-(3,4-dimethoxybenzoyl)-1-piperazinyl]acetanilide in the form of colorless oily substance.

Provenance & Evidence