Ir(III) complexes of diamine ligands for asymmetric ketone hydrogenation
摘要:
The use of a combination of IrCl3 with a series of ligands derived from the C2-symmetric diamine di-phenylethanediamine (DPEN) forms a catalyst capable of the asymmetric hydrogenation of ketones in up to 85% ee. (C) 2009 Elsevier Ltd. All rights reserved.
[EN] NEW PROCESS FOR THE PREPARATION OF 1- [5- (3-CHLORO-PHENYL) - ISOOXAZOL-3-YL] -ETHANONE AND (R) -1- [5- (3-CHLORO-PHENYL) - ISOOXAZOL-3-YL] -ETHANOL [FR] NOUVEAU PROCÉDÉ DE SYNTHÈSE DE LA 1-[5-(3-CHLORO-PHÉNYL)-ISOXAZOL-3-YL]-ÉTHANONE ET DU (R)-1-[5-(3-CHLORO-PHÉNYL)-ISOXAZOL-3-YL]-ÉTHANOL
Process for preparing optically active nitro compounds and cyano compounds
申请人:Kanto Kagaku Kabushiki Kaisha
公开号:EP1512678A1
公开(公告)日:2005-03-09
[Problem] The problem of the invention is to prepare nitro compounds and cyano compounds in high efficiency and high stereoselectivity by a simple and practical Michael reaction.
[Solution] A process for preparing optically active nitro compounds and cyano compounds representedbythechemical formula (C) using a metal complex, which is obtained by reaction of an optically active nitrogen-containing compound and a periodic table group VIII metal complex, in the asymmetric Michael reaction of a compound represented by the chemical formula (A) and a compound represented by the chemical formula (B) according to the claim 1.
Ir(III) complexes of diamine ligands for asymmetric ketone hydrogenation
作者:José E.D. Martins、Martin Wills
DOI:10.1016/j.tet.2009.05.012
日期:2009.7
The use of a combination of IrCl3 with a series of ligands derived from the C2-symmetric diamine di-phenylethanediamine (DPEN) forms a catalyst capable of the asymmetric hydrogenation of ketones in up to 85% ee. (C) 2009 Elsevier Ltd. All rights reserved.
Catalytic Enantioselective Amination of Alcohols by the Use of Borrowing Hydrogen Methodology: Cooperative Catalysis by Iridium and a Chiral Phosphoric Acid
作者:Yao Zhang、Ching-Si Lim、Derek Sui Boon Sim、Hui-Jie Pan、Yu Zhao
DOI:10.1002/anie.201307789
日期:2014.1.27
synthesis of chiral amines, with reductants ranging from Hantzsch esters, silanes, and formic acid to H2 gas. Alternatively, the amination of alcohols by the use of borrowing hydrogen methodology has proven a highly atom economical and green method for the production of amines without an external reductant, as the alcohol substrate serves as the H2 donor. A catalytic enantioselective variant of this