Cesium carbonate → HCID 69202227, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of ethyl 4′-hydroxybiphenyl-4-carboxylate (1.63 g), (R)-(+)-2-(tert-butoxycarbonylamino)propyl methanesulfonate (1.93 g), and cesium carbonate (2.70 g) in N,N-dimethylformamide (18 mL) was stirred at 50° C. for 21 hrs. The reaction mixture was diluted with ethyl acetate, washed with water and brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by aminopropyl silica gel flash column chromatography (eluent: n-hexane/ethyl acetate=1/1) to afford ethyl 4′-[(R)-2-(tert-butoxycarbonylamino)propyloxy]biphenyl-4-carboxylate (2.93 g).

Provenance & Evidence