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:
Jul. 26, 2005
Filed:
Aug. 09, 2001
Amir H. Hoveyda, Belmont, MA (US);
Jason Kingsbury, Brookline, MA (US);
Steven Garber, Brighton, MA (US);
Brian Lawrence Gray, Chestnut Hill, MA (US);
John T. Fourkas, Chestnut Hill, MA (US);
Amir H. Hoveyda, Belmont, MA (US);
Jason Kingsbury, Brookline, MA (US);
Steven Garber, Brighton, MA (US);
Brian Lawrence Gray, Chestnut Hill, MA (US);
John T. Fourkas, Chestnut Hill, MA (US);
The Trustees of Boston College, Chestnut Hill, MA (US);
Abstract
Highly active, recoverable and recyclable transition metal-based metathesis catalysts and their organometallic complexes including dendrimeric complexes are disclosed, including a Ru complex bearing a 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene and styrenyl ether ligand. The heterocyclic ligand significantly enhances the catalytic activity, and the styrenyl ether allows for the easy recovery of the Ru complex. Derivatized catalysts capable of being immobilized on substrate surfaces are also disclosed. The present catalysts can be used to catalyze ring-closing metathesis (RCM), ring-opening (ROM) and cross metatheses (CM) reactions, and promote the efficient formation of various trisubstituted olefins at ambient temperature in high yield.