Chemoenzymatic synthesis of a novel ligand for rhodium-catalysed asymmetric hydrogenation
作者:Brian Adger、Ulrich Berens、Matthew J. Griffiths、Michael J.K elly、Ray McCague、John A. Miller、Christopher F. Palmer、Stanley M. Roberts、Rüdiger Selke、Ute Vitinius、Guy Ward
DOI:10.1039/a704136e
日期:——
The hydrogenation of alkenes 7a–g using a chiral rhodium catalyst
6 (based on a bicyclo[3.2.0]heptane framework) takes place to give the
phenylalanine derivatives 8a–g with remarkably high
stereoselectivity (59–92% ee).
Synthesis of Pd(II) and Pt(II) complexes possessing bicyclo[3.2.0]heptanyl phosphinite ligands: Identification of a novel Pd(II) precatalyst for 1,6-diene cycloisomerisation
作者:Ian J.S. Fairlamb、Stephanie Grant、Adrian C. Whitwood、John Whitthall、Andrei S. Batsanov、Jonathan C. Collings
DOI:10.1016/j.jorganchem.2005.01.037
日期:2005.10
bis(acetonitrile)palladium(II)chloride to give the novel air and moisture stable palladium(II) complex 11. A platinum(II) relative 12 has also been synthesised by reaction of phosphinite 1 with bis(benzonitrile)platinum(II)chloride. Each complex has been thoroughly characterised and their molecular structures confirmed by X-ray diffraction studies. In catalytic applications, such as cross-coupling reactions of organometallic