New insight into the mechanism of catalytic hydrogenation allows the structure of the key intermediate in asymmetric hydrogenation to be predicted
作者:Jinquan Yu、Jonathan B. Spencer
DOI:10.1016/s0040-4020(98)00992-2
日期:1998.12
hydrometalation in homogeneous and heterogeneous hydrogenation of alkenes. By studying the electronic effects on the orientation of hydrometalation it is found with palladium and rhodium that this key step is a two electron process that can occur by two modes (a Pdδ+-Hδ− or b Pdδ− - Hδ+). This provides valuable information about the structure of the metal-alkyl intermediate and helps rationalise how chiral induction
First Evidence That the Mechanism of Catalytic Hydrogenation with Homogeneous Palladium and Rhodium Catalysts Is Strongly Influenced by Substrate Polarity