Intramolecular Aminoalkene Hydroamination Catalyzed by Magnesium Complexes Containing Multidentate Phenoxyamine Ligands
作者:Xiaoming Zhang、Thomas J. Emge、Kai C. Hultzsch
DOI:10.1021/om100675c
日期:2010.11.22
oxyl) and L3MgiPr (L3 = 4-tert-butyl-6-(triphenylsilyl)-2-[benzyl((3-(dimethylamino)propyl)amino)methyl]phenoxyl) supported by potentially tetradentate and tridentate triphenylsilyl-substituted phenoxyamine ligands have been prepared and fully characterized. The X-ray crystallographic analysis of L2MgiPr confirmed a monomeric structure in which only one of the amine side arms is bound to the four-coordinate
镁配合物L 2 Mg i Pr(L 2 = 4-叔丁基-6-(三苯基甲硅烷基)-2- [双((3-(二甲基氨基)丙基)氨基)甲基]苯氧基)和L 3 Mg i Pr( L 3=由潜在的四齿和三齿三苯基甲硅烷基取代的苯氧胺配体支撑的4-叔丁基-6-(三苯基甲硅烷基)-2- [苄基((3-(二甲氨基丙基)氨基)甲基]苯氧基)表征。对L 2 Mg i Pr的X射线晶体学分析证实了单体结构,其中只有一个胺侧臂与四配位的镁原子键合。L中自由和协调的侧臂2 Mg i Pr在25°C的溶液中进行交换过程,而苯氧基二胺配合物L 3 Mg i Pr在另一方面却没有流动性迹象。两种配合物以及L 1 Mg i Pr(L 1 = 4,6-二叔丁基-2- [双(((3-(二甲基氨基)丙基)氨基)甲基]苯氧基)都证明是有效的。氨基烯烃环化中的催化剂。L 2 Mg i Pr表现出最佳的催化活性,并且三苯基甲硅烷基取代的配