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:
Jan. 29, 2013
Filed:
Aug. 30, 2011
Jacob Berlin, Houston, TX (US);
Robert H. Grubbs, South Pasadena, CA (US);
Yann Schrodi, Northridge, CA (US);
Ian C. Stewart, Pasadena, CA (US);
Jacob Berlin, Houston, TX (US);
Robert H. Grubbs, South Pasadena, CA (US);
Yann Schrodi, Northridge, CA (US);
Ian C. Stewart, Pasadena, CA (US);
Materia, Inc., Pasadena, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
The invention relates to ruthenium alkylidene complexes having an N-heterocyclic carbene ligand comprising a 5-membered heterocyclic ring having a carbenic carbon atom and at least one nitrogen atom contained within the 5-membered heterocyclic ring, wherein the nitrogen atom is directly attached to the carbenic carbon atom and is substituted by a phenyl ring, and wherein the phenyl ring has a hydrogen at either or both ortho positions and is substituted at at least one ortho or meta position. The invention also relates to an olefin metathesis reactions and particularly to the preparation of tetra-substituted cyclic olefins via a ring-closing metathesis.