(13 and 14) is also described. The application of neutral Pd complexes to catalytic styrene hydrovinylation afforded moderate conversions, high chemoselectivities (>92%) to 3-phenyl-1-butene and up to 43% ee with precursor 12a. Cationic Pd complexes were tested as catalytic precursors in allylic substitution of rac-3-acetoxy-1,3-diphenyl-1-propene (rac-I), with the anion of dimethylmalonate and benzylamine
描述了五种PPhArR(Ar = 2-对-叔苯基(a),1-pyrenyl(b); R = OMe,Me,i -Pr)的光学纯的P-立体单膦的合成。充分表征了
配体,并通过X射线衍射证实了PPh(1-
吡啶基)R的绝对构型(3b和5b; R分别为OMe和Me)。的单膦与Pd和Ru的有机
金属单元的络合产生的中性配合物[的PdCl(η 3 -2- ME-烯丙基)P](10-12)和将[RuCl 2(η 6 - p -cymene)P](16 –18)。完整的特征,包括对晶体结构的测定将[RuCl 2(η 6 - p -cymene)(PMePh(2- p -三
联苯))](17A)被提供。根据NMR,中性
钯络合物以溶液中两种非对映异构体的混合物形式出现。4个阳离子的合成和表征[加入Pd(η 3 -2- ME-烯丙基)(P)2 ] PF 6(13和14)也被描述。中性
钯络合物在催化
苯乙烯加氢
乙烯基化反