Optically Active Transition-Metal Complexes. 9.<sup>1</sup> A General Stereoselective Route to α-Chiral (<i>R</i>)-Tricarbonyl(η<sup>6</sup>-ethylbenzene)chromium Complexes. Novel Organometallic Phosphine Catalysts for the Asymmetric Hydrovinylation Reaction
作者:Ulli Englert、Roland Haerter、Daniela Vasen、Albrecht Salzer、Eva B. Eggeling、Dieter Vogt
DOI:10.1021/om990386q
日期:1999.10.1
nucleophiles. Both substitution reactions in the benzylic position proceed via retention of configuration. The addition of cyanide is not stereospecific. The phosphine derivatives are efficient catalysts for the enantioselective hydrovinylation of styrene to 3-phenyl-1-butene. X-ray crystal structures establish the absolute configuration of (R)-[(α-chloroethyl)η6-benzene]Cr(CO)3, (R)-[α-(diphenylphosphanyl