Diastereoselective and Enantioselective Rh(I)-Catalyzed Additions of Arylboronic Acids to <i>N</i>-<i>tert</i>-Butanesulfinyl and <i>N</i>-Diphenylphosphinoyl Aldimines
作者:Daniel J. Weix、Yili Shi、Jonathan A. Ellman
DOI:10.1021/ja044003d
日期:2005.2.1
Twonew Rh(I)-catalyzed methods for the synthesis of chiral alpha-branched amines via addition of arylboronic acids to N-tert-butanesulfinyl and N-diphenylphosphinoyl imines have been developed. The syntheses are more functional group tolerant than alternative methods utilizing Grignard or organolithium reagents, and the imine activating groups used are easily removed. These methods are both high-yielding
Asymmetric synthesis of diverse α,α-diarylmethylamines via aryl Grignard additions to chiral N-2,4,6-triisopropylbenzenesulfinylimines
作者:Zhengxu Han、Robert Busch、Keith R. Fandrick、Angelica Meyer、Yibo Xu、Dhileep K. Krishnamurthy、Chris H. Senanayake
DOI:10.1016/j.tet.2011.07.019
日期:2011.9
A mild method has been developed for the asymmetricsynthesis of a variety of chiral diarylmethylamines via the addition of arylGrignardreagents to chiral N-2,4,6-triisopropylbenzenesulfinylimines in high yields and high diastereoselectivities. Higher stereoselectivity was obtained for most of the examples studied when the reactions are performed at ambient temperature as compared to cryogenic conditions