Intermolecular Rhodium-Catalysed Hydroamination of Non-Activated Olefins: Effect of Olefin, Amine, Phosphine and Phosphonium Salt
作者:Mireia Rodriguez-Zubiri、Christine Baudequin、Aurélien Béthegnies、Jean-Jacques Brunet
DOI:10.1002/cplu.201200017
日期:2012.6
reported for the intermolecular hydroamination of ethylene, 1‐butene, and 1‐hexene with aniline‐type amines (0.3 mol % catalytic precursor) to give the expected N‐alkyl‐ (N‐ethyl‐, 1) and N,N‐dialkyl‐anilines (N,N‐diethyl‐, 2) along with 2‐methyl quinolines (3; in the case of ethylene). The effects of time and temperature, as well as the nature of the phosphonium salt, phosphine, and amine on the catalytic
催化体系的RhCl 3 ⋅3H 2 O / 2P(p -CH 3 Ç 6 ħ 4)3 /65 Ñ卜4 PI / 2I 2,这是在我们的研究小组最近发现,允许曾报道了最高的催化活性乙烯,1-丁烯和1-己烯与苯胺型胺(0.3 mol%催化前体)的分子间加氢胺化反应,得到预期的N-烷基-(N-乙基,1)和N,N-二烷基苯胺(N,N-二乙基,2)以及2-甲基喹啉(3; 如果是乙烯)。研究了时间和温度以及the盐,膦和胺的性质对该反应催化活性的影响。该体系对于在2,2'-双(二苯基膦基)-1,1'-联萘基(CE * = 460)和三(对甲苯基)膦(CE * = 520)。通过将Wilkinson的催化剂(Rh I配合物)与n Bu 4 PI和I 2结合,也发现了良好的活性。已证明,PPh 3和I 2的简单关联是I的非常有效的“原位生成”源-发起人。* CE(催化效率)= TON 1 + 2TON 2