Enantioselective Hydrophosphination of Enones with Diphenylphosphine Catalyzed by Bis(imidazoline) NCN Pincer Palladium(II) Complexes
作者:Xin-Qi Hao、Yong-Wei Zhao、Jing-Jing Yang、Jun-Long Niu、Jun-Fang Gong、Mao-Ping Song
DOI:10.1021/om500144b
日期:2014.4.14
chiral NCN pincer Pd(II) complexes with 1,3-bis(2′-imidazolinyl)phenyl (Phebim) ligands were synthesized via the C–H activation or oxidative addition method. A dinuclear macrocyclic Pd(II) complex was also prepared by reaction of the Phebim-H ligand with PdCl2. All of the new compounds were fully characterized, and X-ray single-crystal structures were obtained for two of the complexes. The Pd(II) complexes
通过C–H活化或氧化加成法合成了具有1,3-双(2'-咪唑啉基)苯基(Phebim)配体的一系列手性NCN钳形Pd(II)配合物。还通过Phebim-H配体与PdCl 2反应制备了双核大环Pd(II)配合物。所有的新化合物均得到了充分表征,并为其中两种配合物获得了X射线单晶结构。Pd(II)配合物已成功应用于二苯膦对多种烯类的对映选择性氢磷酸化反应,以高收率提供了光学活性的膦衍生物,对映选择性高达94%ee。