Hydrochloric Acid → {[2-Fluoro-4-(4-fluoro-benzyloxy)-phenylcarbamoyl]-methyl}-carbamic acid tert-butyl ester

Participants

Reaction Steps

A mixture of 2-fluoro-4-(4-fluoro-benzyloxy)-phenylamine (1:1) hydrochloride (272 mg, 1 mmol), Boc-glycine (263 mg, 1.5 mmol), N,N′-dicylcohexylcarbodiimide (206 mg, 1 mmol) and pyridine (127 mg, 1.6 mmol) in ethyl acetate (6 mL) was stirred at room temperature for 3 h. After this time, the reaction mixture wa poured into sodium hydrogen carbonate (saturated), and the mixture extracted with ethyl acetate. The combined organic layers were then washed with brine and dried. Filtration and evaporation afforded the title compound (180 mg, 46%) as a light brown solid after chromatography on silica gel eluting with ethyl acetate:heptane (1:1 to 4:1). MS: m/e=393.1 (M++H).

Provenance & Evidence