Stereochemical Control in the Reduction of 2-Chromanols
作者:Kelin Li、Kumar Vanka、Ward H. Thompson、Jon A. Tunge
DOI:10.1021/ol061727g
日期:2006.10.1
silane reductants and 2,4-trans-chromans using the smaller silane PhSiH(3). The stereochemical outcome has been rationalized on the basis of a Curtin-Hammett kinetic situation arising from hydride delivery to two different conformations of an intermediate oxocarbenium ion. This method provides a powerful way to control the relative stereochemistry of these substructures which are prevalent in bioactive