Synthesis and kinetic resolution of <i>N</i>-Boc-2-arylpiperidines
作者:Edward J. Cochrane、Daniele Leonori、Lorraine A. Hassall、Iain Coldham
DOI:10.1039/c4cc04576a
日期:——
An efficient kinetic resolution of 2-arylpiperidines was developed using a chiral base.
开发了一种使用手性碱的高效动力学拆分2-芳基哌啶的方法。
METHOD OF PRODUCTION AND METHOD OF SEPARATION OF 2,4'-DIPYRIDYL DERIVATIVES AND METHODS OF PRODUCTION OF BENZOXAZEPINE DERIVATIVES AND SALTS THEREOF
申请人:SUNTORY LIMITED
公开号:EP0966440A1
公开(公告)日:1999-12-29
[EN] METHOD OF PRODUCTION AND METHOD OF SEPARATION OF 2,4'-DIPYRIDYL DERIVATIVES AND METHODS OF PRODUCTION OF BENZOXAZEPINE DERIVATIVES AND SALTS THEREOF<br/>[FR] PROCEDE DE PREPARATION ET PROCEDE DE SEPARATION DE DERIVES DE 2,4'-DIPYRIDYLE ET PROCEDES DE PREPARATION DE DERIVES DE BENZOXAZEPINE ET LEURS SELS
申请人:SUNTORY LIMITED
公开号:WO1998052922A1
公开(公告)日:1998-11-26
(EN) A method of production of 2,4'-dipyridyl derivatives by a cross coupling reaction of a 2-halopyridine derivative and a 4-halopyridine using a nickel complex catalyst and a method of separation of a 2,4'-dipyridyl derivative from a mixture of dipyridyl isomers containing a 2,2'-dipyridyl derivative, 2,4'-dipyridyl derivative, and 4,4'-dipyridyl by using a dilute aqueous copper sulfate solution to insolubilize and remove the 2,2'-dipyridyl derivative and 4,4'-dipyridyl is disclosed.(FR) Procédé de préparation de dérivés de 2,4'-dipyridyle au moyen d'une réaction de couplage croisé d'un dérivé de 2-halopyridine et d'une 4-halopyridine mettant en application un catalyseur de complexe de nickel et procédé de séparation d'un dérivé de 2,4'-dipyridyle depuis un mélange d'isomères de dipyridyle contenant un dérivé de 2,2'-dipyridyle, un dérivé de 2,4'-dipyridyle et 4,4'-dipyridyle, consistant à utiliser une solution de sulfate de cuivre afin d'insolubiliser et d'extraire le dérivé de 2,2'-dipyridyle, ainsi que 4,4'-dipyridyle.
A new efficient synthesis of pyridines
作者:Norbert De Kimpe、Marian Keppens、Gwendolien Fonck
DOI:10.1039/cc9960000635
日期:——
Cyclic six-membered imines, i.e. 2,3,4,5-tetrahydropyridines, are efficiently converted under mild conditions into the corresponding pyridines by highly regioselective α, α-dichlorination with N-chlorosuccinimide (NCS) followed by double dehydrochlorination with methanolic bases.