One-Pot Dual Substitutions of Bromobenzyl Chloride, 2-Chloromethyl-6-halogenoimidazo[1,2-<i>a</i>]pyridine and -[1,2-<i>b</i>]pyridazine by Suzuki-Miyaura Cross-Coupling Reactions
作者:Nicolas Henry、Cécile Enguehard-Gueiffier、Isabelle Thery、Alain Gueiffier
DOI:10.1002/ejoc.200800544
日期:2008.10
very simple, mild and inexpensive palladium-catalyzed cross-coupling of (hetero)arylboronic acids with benzylic halides occurs in good yield. This method was successfully expanded to two heterocyclic electrophiles and allowed one-pot dual substitutions of bromobenzyl chloride, 2-chloromethyl-6-halogenoimidazo[1,2-a]pyridine or -[1,2-b]pyridazine, leading to numerous new unsymmetrical methylene-linked
(杂)芳基硼酸与苄基卤化物的非常简单、温和且廉价的钯催化交叉偶联以良好产率发生。该方法成功地扩展到两个杂环亲电试剂,并允许溴苄基氯、2-氯甲基-6-卤代咪唑并[1,2-a]吡啶或-[1,2-b]哒嗪的一锅双取代,导致许多新的不对称亚甲基连接的联芳系统。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)