[EN] PYRAZOLO[4,3-d]PYRIMIDINE DERIVATIVES AND METHODS OF USE THEREOF FOR THE TREATMENT OF CELLULAR PROLIFERATIVE DISORDERS [FR] DÉRIVÉS DE PYRAZOLO [4,3-D]PYRIMIDINE ET LEURS PROCÉDÉS D'UTILISATION POUR LE TRAITEMENT DE TROUBLES PROLIFÉRATIFS CELLULAIRES
Direct Palladium-Catalyzed C-3 Arylation of Free (NH)-Indoles with Aryl Bromides under Ligandless Conditions
作者:Fabio Bellina、Francesca Benelli、Renzo Rossi
DOI:10.1021/jo8007572
日期:2008.7.1
practical, and highly regioselective directpalladium-catalyzed C-3 arylation of free (NH)-indole and its electron-rich 1-unsubstituted derivatives under ligandless conditions is described. The reactions, which are run outside a glovebox without purification of solvent and reagents, involve treatment of free (NH)-indoles with activated, unactivated, and deactivated arylbromides in refluxing toluene in the
描述了一种在无配体条件下有效,实用和高度区域选择性的直接钯催化的游离(NH)-吲哚及其富电子的1-未取代衍生物的C-3芳基化的新方法。该反应在手套箱外部进行,无需纯化溶剂和试剂,涉及在K 2 CO 3作为碱和甲苯的存在下,在回流的甲苯中用活化的,未活化的和失活的芳基溴化物处理游离的(NH)-吲哚。催化剂体系,由Pd(OAc)2和苄基(三丁基)氯化铵组成。实验结果与基于在1-吲哚基钾盐的3-位上的亲电性lad回路径的催化循环一致。