反应详情

A solution of 8.7 g (19.22 mmol) of tert-butyl (S)-2-(1-adamantylmethyloxy-carbonylamino)-3-tert-butoxycarbonylamino-propionate in 180 ml of trifluoroacetic acid/dichloromethane (1:1) was added after 1 min to 1.5 l of ice-cold NaHCO3 solution, the mixture was extracted three times with dichloromethane and the combined dichloromethane phases were then dried over sodium sulfate. After filtration and removal of the solvent in vacuo, 6.35 g (94%) of the title compound were obtained as a colorless solid.

1. extractionthe mixture was extracted three times with dichloromethane
2. dry with materialthe combined dichloromethane phases were then dried over sodium sulfate
3. filtrationAfter filtration and removal of the solvent in vacuo