Imidazole → HCID 20206233, compound

Participants

Reaction Steps

To a suspension of 2.3 g of sodium hydride (60% dispersion in mineral oil) in 50 ml of dimethylformamide is added 4.2 g of imidazole over a 5 minute period under occasional ice cooling. After stirring at room temperature for 30 minutes, a solution of 14.2 g of 3-chloro-4-fluoro-2',4',6'-trimethylbenzophenone in 10 ml of dimethylformamide is added and the mixture is stirred at 50° C. for 3 hours. The reaction mixture is poured into ice-cold water and extracted with benzene. After benzene is distilled off, the residue is purified column-chromatographically to give 15.6 g of 3-chloro-4-(1-imidazolyl)-2',4',6'-trimethylbenzophenone as a colorless oil.

Provenance & Evidence