二座配位子としてのα, ω-ジボスフィン

抄録

Effects of the structure of diphosphines, especially of n in Ph₂P (CH₂) _nPPh₂ (PnP), on the structure, reactivity, catalytic activity and selectivity, and asymmetric induction ability of transition metal complexes are described. The catalytic activity and selectivity change variously depend on n when PnP are used with catalyst metal complexes. P2P is suitable when chelating species is active, while P3P or P4P is superior when dissociation of the diphosphine is necessary. In asymmetric reactions, the diphosphines which form rigid coordination structure bring about high optical yield.