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:
Mar. 10, 2015
Filed:
Sep. 07, 2012
Linda A. Kunz, Naperville, IL (US);
Steven A. Cohen, Naperville, IL (US);
Linda A. Kunz, Naperville, IL (US);
Steven A. Cohen, Naperville, IL (US);
Elevance Renewable Sciences, Inc., Woodridge, IL (US);
Abstract
A method for preparing a ruthenium carbene complex precursor includes reacting a ruthenium refinery salt with a hydrogen halide to form a ruthenium intermediate, and reacting the ruthenium intermediate with an L-type ligand to form the ruthenium carbene complex precursor. A method for preparing a ruthenium vinylcarbene complex includes converting a ruthenium carbene complex precursor into a ruthenium hydrido halide complex, and reacting the ruthenium hydrido halide complex with a propargyl halide to form the ruthenium vinylcarbene complex. A method for preparing a ruthenium carbene complex includes converting a ruthenium carbene complex precursor into a ruthenium carbene complex having a structure (PRRR)ClRu═CH—R, wherein R, R, R, and Rare alike or different, and wherein covalent bonds may optionally exist between two or more of R, R, and Rand/or two of R, R, and Rtaken together may optionally form a ring with phosphorous.