The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 1982
Filed:
Jun. 15, 1981
M Frederick Hawthorne, Encino, CA (US);
Mark S Delaney, Midland, MI (US);
The Regents of the University of California, Berkeley, CA (US);
Abstract
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 homogenous 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.