反应详情

To a solution of (2S,4S)-4-acetylthio-2-(4-hydroxymethylthiazol-2-yl)-1-(4-nitrobenzyloxycarbonyl)pyrrolidine (2.24 g) in dichloromethane (40 ml) was added triethylamine (2.1 ml) and methanesulfonyl chloride (1.2 ml) at 0° C. After stirring for 30 minutes at the same temperature, water (40 ml) was added thereto. The organic layer was washed with brine, dried over magnesium sulfate and evaporated to give (2S,4S)-4-acetylthio-2-[4-(methanesulfonyloxymethyl)thiazol-2-yl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidine (1.6 g).

1. additionwas added
2. washThe organic layer was washed with brine
3. dry with materialdried over magnesium sulfate
4. customevaporated