1,1'-Carbonyldiimidazole → 4-[(Imidazole-1-carbonyl)-amino]-2-methoxy-benzoic acid methyl ester

Participants

Reaction Steps

To a mixture of 4-amino-2-methoxy-benzoic acid methyl ester (1.000 g, 5.246 mmol, Maybridge) in N,N-dimethyl formamide (20.0 mL) was added 1,1′-carbonyldiimidazole (Aldrich, 919.8 mg, 5.502 mmol). After it was stirred at rt for 21 hrs under an argon atmosphere, the solvent was removed and the reaction mixture was extracted with EtOAc, and washed with water (2×), and saturated NaCl. The organic phase was separated, dried over Na2SO4, filtered and concentrated to give 4-[(imidazole-1-carbonyl)-amino]-2-methoxy-benzoic acid methyl ester (1.34 g, 4.87 mmol, 92.8%) which was used without further purification.

Provenance & Evidence