反应详情

温度

60 °C

A solution of 10.9 g (65.4 mmol) of 1-hydroxymethyladamantane and 10.6 g (65.4 mmol) of carbonyldiimidazole in 60 ml of THF was stirred at 50° C. for 1.5 h. 9.7 g (32.7 mmol) of tert-butyl (S)-2-amino-3-tert-butoxycarbonylaminopropionate hydrochloride in 25 ml of THF and 5.6 ml (32.7 mmol) of diisopropylethylamine were added, and the mixture was stirred at 60° C. for 4 h and allowed to stand at room temperature overnight. The solvent was removed in vacuo and the residue was chromatographed on silica gel using heptane/ethyl acetate (7:3). 8.7 g (59%) of tert-butyl (S)-2-(1-adamantylmethyloxycarbonylamino)-3-tert-butoxycarbonylaminopropionate were obtained as a colorless oil.

1. waitto stand at room temperature overnight
2. customThe solvent was removed in vacuo
3. customthe residue was chromatographed on silica gel