[EN] PROCESS TO PRODUCE ENANTIOMERICALLY ENRICHED 1-ARYL- AND 1-HETEROARYL-2-AMINOETHANOLS<br/>[FR] PROCEDE DE PREPARATION D'1-ARYL- ET D'1-HETEROARYL-2-AMINOETHANOLS ENRICHIS EN ENANTIOMERES
申请人:UPJOHN CO
公开号:WO2004085414A1
公开(公告)日:2004-10-07
The invention relates to a method of preparing enantiomerically enriched amino alcohols of Formula (I) wherein the variable R1, R2, and R3 are defined herein.
这项发明涉及一种制备式(I)的对映体富集氨基醇的方法,其中变量R1、R2和R3在此处被定义。
Process to produce enantiomerically enriched 1-aryl-and 1-heteroaryl-2-aminoethanols
申请人:Pfizer, Inc.
公开号:US20040236151A1
公开(公告)日:2004-11-25
The invention relates to a method of preparing enantiomerically enriched amino alcohols of Formula I
1
wherein the variable R1, R2, and R3 are defined herein.
本发明涉及一种制备对映体富集的式I1的氨基醇的方法,其中变量R1、R2和R3在此处定义。
Process to produce enantiomerically enriched alcohols and amines
申请人:Pfizer, Inc.
公开号:US20040230081A1
公开(公告)日:2004-11-18
This invention describes a convenient method for the preparation and use of a ruthenium catalyst for a chiral reduction of ketones and imines.
本发明描述了一种制备和使用钌催化剂的简便方法,用于酮和亚胺的手性还原。
Solvent and in situ catalyst preparation impacts upon Noyori reductions of aryl-chloromethyl ketones: application to syntheses of chiral 2-amino-1-aryl-ethanols
作者:Steven P. Tanis、Bruce R. Evans、James A. Nieman、Timothy T. Parker、Wendy D. Taylor、Steven E. Heasley、Paul M. Herrinton、William R. Perrault、Richard A. Hohler、Lester A. Dolak、Matthew R. Hester、Eric P. Seest
DOI:10.1016/j.tetasy.2006.07.017
日期:2006.8
As part of medicinal chemistry efforts we found it necessary to develop general syntheses of highly enantiomerically enriched 1-aryl-2-chloroethanols and 1-aryl-2-methylaminoethanols. A survey of literature methods suggested that a truly general approach had not yet been reported, encouraging us to undertake the development of such a methodology. This study describes the design, development, and reduction to practice of a general synthesis of chiral 1-aryl-2-chloroethanols and the transformation of these entities to highly enantiomerically enriched 1-aryl-2-methylaminoethanols. Of particular importance were observations of the impact of solvent and the method of catalyst preparation on the yield and enantiomerical excess of chlorohydrins prepared via Noyori transfer hydrogenations of aryl-chloromethyl ketones. (c) 2006 Elsevier Ltd. All rights reserved.