Ruthenium-Catalyzed Tandem Olefin Migration/Aldol and Mannich-Type Reactions in Water and Protic Solvents
作者:Mingwen Wang、Xiao-Fan Yang、Chao-Jun Li
DOI:10.1002/ejoc.200390155
日期:2003.3
[RuCl2(PPh3)3] has been developed, through a tandem olefin migration/aldol reaction in a water/toluene mixture. The presence of In(OAc)3 promoted the aldol reaction with α-vinylbenzyl alcohol (4) and aldehyde, while treatment of 3-buten-2-ol (2) with imines generated Mannich-type reaction products; syn isomers were formed as the major diastereomers for the aldol products 3a−3g and 5a−5e and the Mannich
在催化量的 [RuCl2(PPh3)3] 存在下,3-丁烯-2-醇 (2) 和醛之间的交叉偶联已经通过在水/甲苯混合物中的串联烯烃迁移/羟醛反应得到发展。In(OAc)3的存在促进了α-乙烯基苄醇(4)和醛的羟醛反应,而用亚胺处理3-丁烯-2-醇(2)产生曼尼希型反应产物;顺式异构体作为主要的非对映异构体形成为羟醛产物 3a-3g 和 5a-5e 以及曼尼希产物 7a-7g。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)