Imidazole → [3-(1H-Imidazol-1-yl)phenyl](2,4,6-trimethylphenyl)methanone

Participants

Reaction Conditions

Reaction Steps

To a suspension of 2.9 g of sodium hydride (60% dispersion in mineral oil) in 50 ml of hexamethylphosphoric triamide is added 5.3 g of imidazole over a 30 minute period under heating at 40° C. After the addition is complete, the mixture is stirred at room temperature for an hour. To the reaction mixture is added 16.6 g of 3-fluoro-2',4',6'-trimethylbenzophenone and the mixture is stirred at 70° C. for 24 hours. The reaction solution is poured into ice-cold water and extracted with ethyl acetate. The ethyl acetate layer is washed with water, dried and concentrated. The residue is recrystallized from a mixture of toluene and isopropyl ether to give 16 g of 3-(1-imidazolyl)-2',4',6'-trimethylbenzophenone as white crystals, melting at 134°-136° C.

Provenance & Evidence