Lewis Acid Catalyzed Intermolecular Olefin Hydroamination: Scope, Limitation, and Mechanism
作者:Xiaojuan Cheng、Yuanzhi Xia、Hua Wei、Bin Xu、Chongguang Zhang、Yahong Li、Guimin Qian、Xiaohua Zhang、Kai Li、Wu Li
DOI:10.1002/ejoc.200701080
日期:2008.4
Intermolecular olefin hydroamination was studied by various Lewis acids. The results of ZrCl(4), FeCl(3), BiCl(3), and AlCl(3) catalyzed reactions of norbornene with aromatic amines were compared, and BiCl(3) was found to be the most effective catalyst to give high yields for various amines, whereas ZrCl(4) could promote the reactions at relatively low temperatures. The FeCl(3) catalyzed reactions
通过各种路易斯酸研究了分子间烯烃加氢胺化。比较了 ZrCl(4)、FeCl(3)、BiCl(3) 和 AlCl(3) 催化降冰片烯与芳香胺反应的结果,发现 BiCl(3) 是获得高产率的最有效催化剂对于各种胺,而 ZrCl(4) 可以在相对较低的温度下促进反应。FeCl(3) 催化的反应是最具化学选择性的,使用 AlCl(3) 可以获得某些胺的优异产量。提出了碳正离子机理,并应用该机理实现了异戊二烯和2,5-二氯苯胺可控合成烯丙胺和四氢喹啉。((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)。