申请人:Chemi S.p.A.
公开号:US06153758A1
公开(公告)日:2000-11-28
Diphosphines of a mixed heteroarylic-arylic type, wherein the phosphine group carrying backbone is constituted by the interconnection of a five-atom heteroaromatic ring and a carbocyclic aromatic ring, forming an atropoisomeric chiral system with a C.sub.1 symmetry. Said chiral diphosphines are advantageously used as ligands for the formation of chiral complexes with transition metals, in particular Ru, Rh, Pd, Ir, Ni. The so-obtained chiral complexes are used as chiral complexes are used as chiral catalysts for stereocontrolled reactions, in particular diastereo and enantioselective reduction reactions, hydroformylation reactions, hydrosilylation reactions, hydrocyanation reactions, double-bond isomerisation reactions, other reactions of carbon--carbon bond formation.
混合杂芳基-芳基型二膦,其中携带膦基团的骨架由五元杂芳环和碳环芳环的相互连接构成,形成具有C.sub.1对称性的异构手性系统。这些手性二膦有利地用作配体,与过渡金属形成手性配合物,特别是Ru、Rh、Pd、Ir、Ni。所得的手性配合物用作立体控制反应的手性催化剂,特别是对映异构和对映选择性还原反应、氢甲酰化反应、氢硅烷化反应、氢氰化反应、双键异构反应以及其他碳-碳键形成反应。