Enantioselective and Catalytic Method for α-Crotylation of Aldehydes with a Kinetic Self-Refinement of Stereochemistry
作者:Andrei V. Malkov、Mikhail A. Kabeshov、Maciej Barłog、Pavel Kočovský
DOI:10.1002/chem.200802224
日期:2009.2.2
Kinetic refinery: A practical, highly stereoselective, two‐step catalytic protocol for the α‐allylation of aldehydes, starting from crotyltrichlorosilanes, has been developed (see scheme). In each reaction step, one of the stereoisomers reacted faster than the other, which resulted in a kinetic stereochemical (E/Z) self‐refinement of the system and led to the formation of virtually enantiomerically