Water → tert-butyl{(2S)-1-[4-chloro-2-(1,1,1-trifluoro-2-methylpropan-2-yl)phenoxy]propan-2-yl}carbamate

Participants

Reaction Conditions

Reaction Steps

Cesium carbonate (2.05 g, 6.28 mmol) was added to a solution of 4-chloro-2-(1,1,1-trifluoro-2-methylpropan-2-yl)phenol (C48) (500 mg, 2.10 mmol) in N,N-dimethylformamide (5 mL). (2S)-2-[(tert-Butoxycarbonyl)amino]propyl methanesulfonate (P12) (0.53 g, 2.1 mmol) was added, and the reaction mixture was heated to 60° C. After 30 minutes, additional P12 (0.53 g, 2.1 mmol) was added, and heating was continued for 18 hours. Water (100 mL) was added, and the mixture was extracted with diethyl ether (3×50 mL). The combined organic layers were dried over magnesium sulfate, filtered, and concentrated under reduced pressure. Silica gel chromatography (Gradient: 0% to 15% ethyl acetate in heptane) afforded the product as a colorless oil. Yield: 625 mg, 1.58 mmol, 75%.

Provenance & Evidence