Dimethylformamide → 3-{2-[(4-Methoxyphenyl)methyl]-2H-tetrazol-5-yl}benzoyl chloride

Participants

Reaction Steps

The carboxylic acid intermediate (10 g, 0.032 mol) from Step (c) was suspended in dichloromethane followed by the addition of oxalyl chloride (20.4 g, 0.16 mol) and catalytic DMF. The reaction mixture was stirred at room temperature for 3 hours, at which time dissolution was nearly complete. The reaction mixture was filtered and concentrated in vacuo. The residue was triturated with petroleum ether and collected by filtration to give the title compound (9.5 g, 90%) as a white solid. 1H NMR (CDCl3) δ 8.9 (s, 1H), 8.5 (d, 1H), 8.2 (d, 1H), 8.6 (t, 1H), 7.4 (d, 2H), 6.9 (d, 2H), 3.8 (s, 3H) ppm. Mp 122–124° C.

Provenance & Evidence