Stereoselective synthesis of 3-hydroxy-2-sulfonyltetrahydrofurans from β-(triethylsilyloxy)aldehydes and p -tolylsulfonyldiazomethane
作者:Steven R Angle、Stephanie Z Shaw
DOI:10.1016/s0040-4020(01)00365-9
日期:2001.6
A new method for the stereoselective syntheses of 2-sulfonyltetrahydrofurans fromβ-(triethylsilyloxy)aldehydes and p-tolylsulfonyldiazomethane in the presence of BF3·OEt2 as Lewis acid is reported. The versatility of the sulfonyl functional group allows further functionalization alpha to the sulfonyl group. For example, treatment of 2-sulfonlytetrahydrofuran 2b with BF3·OEt2 and allyl silane afforded