Methyl iodide → 4-Bromo-2-[(cyclopropyl-methylamino)-methyl]-benzoic acid isopropyl ester

Participants

Reaction Steps

A solution of 4-bromo-2-cyclopropylaminomethyl-benzoic acid isopropyl ester (Intermediate 119, 1.33 g, 4.26 mmol) in acetone (8 mL) was treated with potassium carbonate (2.36 g, 17.05 mmol) and methyl iodide (0.53 mL, 8.52 mmol) and the resulting reaction mixture was stirred at ambient temperature for 3 h. The volatiles were evaporated in vacuo, the residue was diluted with water and extracted with diethyl ether (×2). The combined organic phase was dried over anhydrous magnesium sulfate, filtered over a short bed of silica gel (230–400 mesh) and evaporated in vacuo to afford the title product (1.23 g, 70%).

Provenance & Evidence