Asymmetric catalysis. Asymmetric catalytic intramolocular hydrosilation and hydroacylation
作者:Richard W. Barnhart、Xianqi Wang、Pedro Noheda、Steven H. Bergens、John Whelan、B. Bosnich
DOI:10.1016/s0040-4020(01)89370-4
日期:1994.4
type [Rh(chiral Diphosphine)]+ efficiently catalyse the intramolecular hydrosilation of silylethers derived fromallylicalcohol. The products can be converted to chiral 1,3-dols. High enantiomeric excesses (ee's) are observed for substrates bearing an aryl group at the olefin terminus. These same catalyst produce chiral cyclopentanones from 4-substitued 4-pentenals. Tertiary acyl and ester substituents