Rhodium-Catalyzed Asymmetric Arylation of <i>N</i>-(<i>tert</i>-Butanesulfinyl)imines with Sodium Tetraarylborates
作者:Leleti Rajender Reddy、Aditya P. Gupta、Eric Villhauer、Yugang Liu
DOI:10.1021/jo2024224
日期:2012.1.20
A diastereoselective rhodium-catalyzed arylation of N-(tert-butanesulfinyl)imines with sodium tetraarylborates is described. This method is general for constructing various chiral α-branchedamines and 2-substituted pyrrolidines with high diastereoselectivity. A practical asymmetric approach to access chiral amines has been developed involving the use of air-stable Rh catalysts and reagents and in
Asymmetric Rh(I)-Catalyzed Addition of MIDA Boronates to <i>N</i>-<i>tert</i>-Butanesulfinyl Aldimines: Development and Comparison to Trifluoroborates
作者:Katrien Brak、Jonathan A. Ellman
DOI:10.1021/jo100318s
日期:2010.5.7
The Rh(I)-catalyzed addition of alkenyl and aryl MIDA boronates to N-tert-butanesulfinyl aromatic and aliphatic imines proceeds in good yields (up to 99%) and with very high selectivity (98:2 to >99:1). In comparison to trifluoroborates, higher yields and selectivities are observed for the addition to N-tert-butanesulfinyl aromatic imines. This new method expands upon the versatility of the Rh(I)-catalyzed
Asymmetric synthesis of cetirizine dihydrochloride
作者:Derek A Pflum、Dhileepkumar Krishnamurthy、Zhengxu Han、Stephen A Wald、Chris H Senanayake
DOI:10.1016/s0040-4039(01)02294-8
日期:2002.2
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.