PROCESSES AND INTERMEDIATES FOR THE PREPARATION OF HETEROCYCLIC SULFONAMIDE COMPOUNDS
申请人:Alimardanov Asaf
公开号:US20090023930A1
公开(公告)日:2009-01-22
Methods for preparing compound of formula (I) are described, wherein R
1
-R
3
are defined herein, as are methods for preparing the intermediates formed therein.
Also described are methods for enantioselectively preparing a chiral compound of the following structure, wherein R
2
and R
3
are defined herein.
PROCESS FOR THE PREPARATION OF TRIFLUOROALKYL-PHENYL AND HETEROCYCLIC SULFONAMIDES
申请人:Connolly Terrence Joseph
公开号:US20090023903A1
公开(公告)日:2009-01-22
A novel trifluoroacetylating agent, i.e., N-trifluoroacetylmorpholine, is described. This reagent is useful in the preparation of phenyl and heterocyclic sulfonamide compounds. Methods are therefore described for preparing sulfonamide compounds of the following structure, wherein R
1
and R
2
are defined herein, using N-trifluoroacetylmorpholine. The sulfonamide compounds that may be prepared as described herein include 5-chloro-thiophene-2-sulfonic acid [(1S,2R)-2-(3,5-difluoro-phenyl)-3,3,3-trifluoro-1-hydroxymethyl-propyl]-amide using N-trifluoroacetylmorpholine.
[EN] PROCESSES AND INTERMEDIATES FOR THE PREPARATION OF HETEROCYCLIC SULFONAMIDE COMPOUNDS<br/>[FR] PROCÉDÉS ET INTERMÉDIAIRES POUR LA PRÉPARATION DE COMPOSÉS SULFONAMIDE HÉTÉROCYCLIQUES
申请人:WYETH CORP
公开号:WO2009012203A1
公开(公告)日:2009-01-22
Methods for preparing compound of Formula (I) are described, wherein R1-R3 are defined herein, as are methods for preparing the intermediates formed therein. Formula (I) Also described are methods for enantioselectively preparing a chiral compound of the following structure, wherein R2 and R3 are defined herein. Formula (II).
Practical Enantioselective Synthesis of a 3-Aryl-3-trifluoromethyl-2-aminopropanol Derivative
作者:Asaf Alimardanov、Antonia Nikitenko、Terrence J. Connolly、Gregg Feigelson、Anita W. Chan、Zhixian Ding、Mousumi Ghosh、Xinxu Shi、Jianxin Ren、Eric Hansen、Roger Farr、Michael MacEwan、Sam Tadayon、Dane M. Springer、Anthony F. Kreft、Douglas M. Ho、John R. Potoski
DOI:10.1021/op900216v
日期:2009.11.20
Development of a large-scale enantioselectivesynthesis of a lead compound containing a 3-aryl-3-trifluoromethyl-2-aminopropanol core is described. A single isomer of 3,3-disubstituted acrylic acid derivative was prepared via Perkin condensation or Horner−Wadsworth−Emmons olefination, followed by hydrolysis. The acid was converted to a chiral acryloxazolidinone derivative. Hydrogenation of the latter