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摘要
A new, fluorous-tagged chiral auxiliary has been developed for the asymmetric, SmI2-mediated coupling of aldehydes and alpha,beta-unsaturated esters. gamma-Butyrolactones are obtained in moderate to good isolated yield and in high enantiomeric excess. The fluorous tag allows the auxiliary to be conveniently recovered by fluorous solid-phase extraction (FSPE) and reused.
- 出版日期2008-12-22
