Asymmetric synthesis of cetirizine dihydrochloride
摘要:
Practical route technology for the preparation of (S)-cetirizine.2HCl via diastereoselective organometallic addition to N-tert-butanesulfinyl aldimines is disclosed. (C) 2002 Elsevier Science Ltd. All rights reserved.
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