Metallocarborane precursor and catalyst

Details Metallocarborane precursor and catalyst Metallocarborane precursor and catalyst

B - Operations, Transporting

01

J

252/90, 260/429.

B01J 31/16 (2006.01) B01J 31/24 (2006.01) C07C 45/50 (2006.01) C07F 15/00 (2006.01)

Patent

CA 1222251

IMPROVED METALLOCARBORANE PRECURSOR AND CATALYST Abstract of the Disclosure: An extraordinarily active carborane catalyst for use in hydrogenation, hydroformulation and isomerization reactions. The new catalyst is a modification of known metallocarborane catalysts having a transition metal symmetrically bonded to the pentagonal face of a dicarborane cage with two triphenylphosphine ligands and one hydrogen ligand occupying the remaining transition metal ligand sites. The new alkene-metallocarborane replaces one of the triphenylphosphine ligands with a lower chelating or bridging alkene which is bound to both the transition metal and the carborane cage. The alkene-metallocarborane catalyst may be used as a homogeneous catalyst or may be bound to a suitable polymer support for use as a heterogeneous catalyst. The catalyst has been found to be among the most highly reactive catalysts known to date. It is believed the high reactivity of the new catalyst is due to the in situ irreversible hydrogenation of the alkene side chain to produce an open coordination site on the transition metal atom.

400090

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