Patent ID: 6225488
Filing Date: 2001-05-01
Classification: B01J,C07C,C07F

Abstract:
A compound represented by formula I ##STR10##wherein M is ruthenium or osmium;each of X.sup.1 and X.sup.2, which may be the same or different, is a C.sub.3 -C.sub.20 hydrocarbon group having an allyl moiety as an end group bonded to the central metal atom M, optionally substituted on its backbone with up to three substituents independently selected from the group consisting of a C.sub.1 -C.sub.20 alkyl, a C.sub.1 -C.sub.20 alkoxy, and a C.sub.6 -C.sub.12 aryl, and further optionally having up to three functional groups independently selected from the group consisting of hydroxyl, nitro, a halogen, thiol, thioether, ketone, aldehyde, ester, ether, amine, imine, amide, carboxylic acid, disulfide, carbonate, isocyanate, carbodiimide, carboalkoxy, and carbamate; orX.sup.1 and X.sup.2 together form a group which results from dimerization of a C.sub.4 -C.sub.10 alkene and has at each end an allyl moiety bonded to the central metal atom M, said group resulting from the alkene dimerization being optionally substituted on its backbone with up to three substituents independently selected from the group consisting of a C.sub.1 -C.sub.20 alkyl, a C.sub.1 -C.sub.20 alkoxy, and a C.sub.6 -C.sub.12 aryl, and further optionally having up to three functional groups independently selected from the group consisting of hydroxyl, nitro, a halogen, thiol, thioether, ketone, aldehyde, ester, ether, amine, imine, amide, carboxylic acid, disulfide, carbonate, isocyanate, carbodiimide, carboalkoxy, and carbamate;L.sup.1 is a neutral electron donor ligand;L.sup.2 is a carbene group represented by the formula ##STR11##wherein each of R and R.sup.1 is independently selected from the group consisting of hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkenyl, C.sub.2 -C.sub.20 alkynyl, C.sub.6 -C.sub.20 aryl, C.sub.1 -C.sub.20 carboxylate, C.sub.1 -C.sub.20 alkoxy, C.sub.2 -C.sub.20 alkenyloxy, C.sub.2 -C.sub.20 alkynyloxy, C.sub.6 -C.sub.20 aryloxy, C.sub.2 -C.sub.20 alkoxycarbonyl, C.sub.1 -C.sub.20 alkylthio, C.sub.1 -C.sub.20 alkylsulfonyl, and C.sub.1 -C.sub.20 alkyl sulfinyl, wherein each of R and R.sup.1 optionally may have up to three substituents selected from the group consisting of C.sub.1 -C.sub.5 alkyl, a halogen, C.sub.1 -C.sub.5 alkoxy, and C.sub.6 -C.sub.10 aryl;L.sup.3 is a neutral electron donor ligand which may be the same as or different from L.sup.1, or L.sup.3 is a halide group;A is a counter anion coordinated to the central metal atom M but only weakly coordinated so that A is not bonded as a ligand to the central metal atom M; andn is 1 when L.sup.3 is a halide and n is 2 when L.sup.3 is a neutral electron donor ligand.