Asymmetric hydroamination of acrylonitrile derivatives catalyzed by Ni(II)-complexes
作者:Luca Fadini、Antonio Togni
DOI:10.1016/j.tetasy.2008.11.010
日期:2008.11
Chiral ferrocenyl tridentate phosphine ligands were synthesized and used in asymmetric hydroamination reactions catalyzed by Ni(II)-complexes. Compounds of the type [Ni(PPP)L]2+, where L is a chloride, solvent molecule or a coordinated substrate, were isolated. The efficiency of these complexes in asymmetric catalysis was high when aliphatic or aromatic amines were reacted with electron-poor olefins
合成了手性二茂铁基三齿膦膦配体,并将其用于Ni(II)配合物催化的不对称加氢胺化反应中。分离了[Ni(PPP)L] 2+类型的化合物,其中L是氯化物,溶剂分子或配位的底物。当脂族或芳族胺与贫电子烯烃,特别是与丙烯腈衍生物反应时,这些络合物在不对称催化中的效率很高。对于在甲基丙烯腈中加入吗啉(在室温下为ee的69%),该加氢胺化反应在-80°C下可提供高达95%的对映选择性。