申请人:Nippon Zeon Co., Ltd.
公开号:US06342621B1
公开(公告)日:2002-01-29
Penta-coordinated ruthenium catalysts for the metathesis reactions of olefins, in particular ring opening metathesis polymerization (ROMP) of cyclo-olefin monomers, which are cationic complexes represented by formula I, II or III:
wherein each of X1 and X2, which may be the same or different, is an optionally substituted C3-C20 hydrocarbon group having an allyl moiety as an end group bonded to the ruthenium atom, or X1 and X2 together form a group, optionally substituted, which results from dimerization of an alkene and has at each end an allyl group bonded to the ruthenium atom; L1 and L2 are mono-dentate neutral electron donor ligands, preferably highly sterically encumbered neutral electron donor ligands such as alkyl phosphines or amines; Lcircumflex over ( )}L is a bidentate neutral electron donor ligand, preferably phosphine, amino, imino, arsine or arphos; L3 is a solvent molecule or a neutral mono-dentate electron donor ligand; Lcircumflex over ( )}Lcircumflex over ( )}L is a tridentate electron donor ligand, preferably phosphorus or nitrogen containing ligand; and [A] is a counter anion weakly coordinated to the ruthenium atom.
五配位钌催化剂用于烯烃的交换反应,特别是环戊烯单体的环戊烯开环聚合(ROMP),其为由式I、II或III表示的阳离子配合物:其中X1和X2中的每一个,可以相同也可以不同,是一个可选择取代的端基为烯丙基的C3-C20烃基,与钌原子键合,或者X1和X2共同形成一个可选择取代的组,其是由烯烃的二聚化产生的,每一端有一个烯丙基键合到钌原子;L1和L2是单齿中性电子给体配体,最好是高度立体阻碍的中性电子给体配体,如烷基膦或胺;Lcircumflex over ( )}L是双齿中性电子给体配体,最好是膦、氨基、亚胺、砷胺或磷氮;L3是溶剂分子或中性单齿电子给体配体;Lcircumflex over ( )}Lcircumflex over ( )}L是三齿电子给体配体,最好是含磷或氮的配体;[A]是弱配位到钌原子的反离子。