反应详情

To a solution of 7.00 g of 2-(N-allyloxycarbonylaminomethyl)-3-t-butyldimethylsilyloxybutan-1-ol and 4.60 ml of triethylamine in 35 ml of dichloromethane was added dropwise 2.05 ml of methanesulfonyl chloride at -10° C. After stirring for 3 hours, water was added to the reaction mixture and then the solution was extracted with chloroform. The organic layer was washed in turn with 1N hydrochloric acid and brine, and dried over anhydrous magnesium sulfate. Evaporation of the solvent followed by a column chromatography on silica gel (hexane:ethyl acetate=3:1) gave 8.8 g of 2-(N-allyloxycarbonylaminomethyl)-3-t-butyldimethylsilyloxy-1-methanesulfonyloxybutane.

1. extractionthe solution was extracted with chloroform
2. washThe organic layer was washed in turn with 1N hydrochloric acid and brine
3. dry with materialdried over anhydrous magnesium sulfate
4. customEvaporation of the solvent