反应详情

A solution of 1.89 g of methanesulfonyl chloride in 10 ml of dried tetrahydrofuran was added dropwise to a suspension of 2.32 g of trans-1-(p-nitrobenzyloxycarbonyl)-4-hydroxy-L-prolineamide and 1.67 g of triethylamine in 40 ml of dried tetrahydrofuran at room temperature. After stirring for 1 hour, the reaction mixture was concentrated under reduced pressure, and to the residue were added 30 ml of water and 30 ml of diethyl ether. After cooling, the resulting white crystals were separated by filtration, washed successively with cool water and cool diethyl ether and dried under reduced pressure to obtain trans-1-(p-nitrobenzyloxycarbonyl)-4-methanesulfonyloxy-L-prolineamide.

1. concentrationthe reaction mixture was concentrated under reduced pressure
2. additionto the residue were added 30 ml of water and 30 ml of diethyl ether
3. temperatureAfter cooling
4. customthe resulting white crystals were separated by filtration
5. washwashed successively with cool water
6. temperaturecool diethyl ether
7. customdried under reduced pressure