Ammonium Hydroxide → HCID 18963775, compound

Participants

Reaction Steps

A suspension of 5-methoxy-3-(phenylmethoxy)-2-benzofurancarboxylic acid (157 mg, 0.50 mmol) and 1,1'-carbonyldiimidazole (96 mg, 0.59 mmol) in 15 mL of tetrahydrofuran is heated at reflux for 1.5 hours. The reaction solution is cooled to room temperature, aqueous ammonium hydroxide (1 mL) is added and the reaction mixture is stirred at room temperature for 1 hour. The reaction is diluted with ethyl acetate and washed with brine. The organic phase is dried over magnesium sulfate, filtered, and concentrated in vacuo. Chromatography eluting with ethyl acetate:hexane (1:1) provides 5-methoxy-3-(phenylmethoxy)-2-benzofurancarboxamide in 47% yield; mp=70°-72° C.

Provenance & Evidence