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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.:

US 8993804 B1

PDFFull Text
Date of Patent:
Mar. 31, 2015

Filed:

Mar. 08, 2013

Highly active multidentate catalysts for efficient alkyne metathesis

Applicant:

The Regents of the University of Colorado, a Body Corporate, Denver, CO (US);

Inventors:

Wei Zhang, Superior, CO (US);

Jyothish Kuthanapillil, Boulder, CO (US);

Qi Wang, Qingdao, CN;

Assignee:

The Regents of the University of Colorado, a body corporate, Denver, CO (US);

Attorneys:

Saul Ewing, LLP

Kathryn Doyle

Domingos Silva

Primary Examiner:

Rosalynd Keys

Assistant Examiner:

Jenifer C Sawyer

Int. Cl.
CPC ...
C07C 211/00 (2006.01); C07C 215/50 (2006.01); B01J 31/22 (2006.01); C07C 41/30 (2006.01); C07C 45/72 (2006.01); C07D 333/08 (2006.01); C07D 213/127 (2006.01); C07D 487/22 (2006.01); C07C 37/48 (2006.01); C07B 37/00 (2006.01); C07C 6/02 (2006.01); C07F 7/00 (2006.01); C07C 17/269 (2006.01); C07F 11/00 (2006.01); C07C 215/76 (2006.01); C07C 215/90 (2006.01); C07D 333/18 (2006.01);
U.S. Cl.
CPC ...
C07C 215/50 (2013.01); B01J 31/2295 (2013.01); C07C 41/30 (2013.01); C07C 45/72 (2013.01); C07D 333/08 (2013.01); C07D 213/127 (2013.01); C07D 487/22 (2013.01); C07C 37/48 (2013.01); C07B 37/00 (2013.01); C07C 6/02 (2013.01); C07F 7/00 (2013.01); C07C 17/269 (2013.01); C07F 11/00 (2013.01); C07C 215/76 (2013.01); C07C 215/90 (2013.01); C07D 333/18 (2013.01);
Abstract

The invention relates to highly active and selective catalysts for alkyne metathesis. In one aspect, the invention includes a multidentate organic ligand wherein one substrate-binding site of the metal center is blocked. In another aspect, the invention includes N-quaternized or silane-based multidentate organic ligands, capable of binding to metals. In yet another aspect, the invention includes N-quaternized or silane-based multidentate catalysts. The catalysts of the invention show high robustness, strong resistance to small alkyne polymerization and significantly enhanced catalytic activity compared to their corresponding non-quaternized or non-silane-based multidentate catalyst analogs.

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