反应详情

A solution of (2S,4R)-1-benzyloxycarbonyl-2-(2-hydroxyethyloxymethyl)-4-methanesulfonyloxypyrrolidine (53.0 g) in methanol (530 ml) was hydrogenated under atmospheric pressure of hydrogen at ambient temperature for 4 hours in the presence of 10% palladium on carbon (5.3 g, 50% wet). The catalyst was filtered off and the filtrate was concentrated under reduced pressure to give a syrup. The syrup was subjected to a column chromatography on silica gel (200 g) and eluted with a mixture of methanol and dichloromethane (5:95 V/V) to give (2S,4R)-2-(2-hydroxyethyloxymethyl)-4-methanesulfonyloxypyrrolidine (30.55 g).

1. filtrationThe catalyst was filtered off
2. concentrationthe filtrate was concentrated under reduced pressure
3. customto give a syrup
4. washeluted with a mixture of methanol and dichloromethane (5:95 V/V)