Synthesis and catalytic properties of cationic palladium(II) and rhodium(I) complexes bearing diphosphinidinecyclobutene ligands
作者:Rader S. Jensen、Kazutoshi Umeda、Masaaki Okazaki、Fumiyuki Ozawa、Masaaki Yoshifuji
DOI:10.1016/j.jorganchem.2006.04.048
日期:2007.1
Cationic palladium(II) and rhodium(I) complexes bearing 1,2-diaryl-3,4-bis[(2,4,6-tri-t-butylphenyl)phosphinidene]cyclobutene ligands (DPCB–Y) were prepared and their structures and catalytic activity were examined (aryl = phenyl (DPCB), 4-methoxyphenyl (DPCB–OMe), 4-(trifluoromethyl)phenyl (DPCB–CF3)). The palladium complexes [Pd(MeCN)2(DPCB–Y)]X2 (X = OTf, BF4, BAr4 (Ar = 3,5-bis(trifluoromethyl)phenyl))
阳离子钯(II)和铑(I)配合轴承1,2-二芳基-3,4-二[(2,4,6-三-吨丁基苯基)亚膦]环丁烯配体(DPCB-Y)中制备和它们的检查了结构和催化活性(芳基=苯基(DPCB),4-甲氧基苯基(DPCB-OMe),4-(三氟甲基)苯基(DPCB-CF 3))。钯配合物[Pd(MeCN)2(DPCB-Y)] X 2(X = OTf,BF 4,BAr 4(Ar = 3,5-双(三氟甲基)苯基))是通过DPCB-Y的反应制备的[Pd(MeCN)4 ] X 2,它们是由MeCN中的Pd(OAc)2和HX生成的。另一方面,铑络合物[Rh(MeCN)2(DPCB-Y)]光学传递函数通过的处理制备的[Rh(μ-Cl)的(环辛烯)2 ] 2与DPCB-Y在CH 2氯2,接着用的AgOTf治疗在MeCN的存在。阳离子络合物催化氨基甲酸苄酯向α,β-不饱和酮的共轭加成反应。