Imidazole → Dechloroclotrimazole

Participants

Reaction Steps

A mixture of pyridine (15 ml), diphenyl phosphite (2.34 g, 10 mmole), imidazole (0.68 g, 10 mmole) and triphenylmethanol (2.08 g, 8 mmole) was refluxed for 3 hours. Pyridine was removed under reduced pressure, and the residue was extracted with dichloromethane. The extract was washed with a 5% aqueous hydroxide solution and water in order, dried and evaporated. Recrystallization of the residue (2.23 g) from acetonitrile gave 2.05 g of 1-triphenylmethylimidazole as colorless needles. Yield, 82.7%. M.P., 221°-223° C.

Provenance & Evidence