Chiral arene chromium tricarbonyl complexes as enantioselective catalysts: highly selective 1,2 alkyl additions to aldehydes
作者:Steven B. Heaton、Graham B. Jones
DOI:10.1016/s0040-4039(00)91708-8
日期:1992.3
The preparation of a rationally designed catalyst system derived from norephedrine is reported. The key stereodirective element emanates from a chromium tricarbonyl group complexed to one face of the aryl ring. The catalysts mediate the addition of diethyl zinc to a variety of aldehydes with extremely high enantioselectivity.