Water → 3-(2-Fluorobenzyl)imidazo[1,5-a]pyridine-1-carbonitrile

Participants

Reaction Steps

269 mg (1.00 mmol) of 3-(2-fluorobenzyl)imidazo[1,5-a]pyridine-1-carboxamide from example 17A are dissolved in 2.5 ml of THF, and 200 mg (2.50 mmol) of pyridine and 525 mg (2.50 mmol) of trifluoroacetic anhydride are added. The mixture is stirred at RT for 15 h, then water is added, and the mixture is extracted with ethyl acetate. The organic phase is washed with saturated sodium bicarbonate solution and 1 N hydrochloric acid, dried over sodium sulfate and concentrated. The crude product obtained (188 mg, 61% purity, 45% of theory) is reacted without further purification.

Provenance & Evidence