Daniel Edwin Sanders

US Patent:

20130296511, Nov 7, 2013

Filed:

Feb 27, 2013

Appl. No.:

13/779190

Inventors:

Mark S. TRIMMER - Monrovia CA, US
Andrew HEJL - Pasadena CA, US
Daniel SANDERS - Pasadena CA, US
Robert H. GRUBBS - South Pasadena CA, US

International Classification:

C07F 15/00
C08F 132/08
C07C 67/333

US Classification:

526171, 548103, 546 2, 560122

Abstract:

The invention provides novel organometallic complexes useful as olefin metathesis catalysts. The complexes have an N-heterocyclic carbene ligand and a chelating carbene ligand associated with a Group 8 transition metal center. The molecular structure of the complexes can be altered so as to provide a substantial latency period. The complexes are particularly useful in catalyzing ring closing metathesis of acyclic olefins and ring opening metathesis polymerization of cyclic olefins.

US Patent:

20150141603, May 21, 2015

Filed:

Sep 26, 2014

Appl. No.:

14/497387

Inventors:

- Pasadena CA, US
Mark S. TRIMMER - Monrovia CA, US
Andrew HEJL - Pasadena CA, US
Daniel SANDERS - Pasadena CA, US
Robert H. GRUBBS - South Pasadena CA, US

International Classification:

C08G 61/02
C07D 493/10

US Classification:

526171, 549265

Abstract:

The invention provides novel organometallic complexes useful as olefin metathesis catalysts. The complexes have an N-heterocyclic carbene ligand and a chelating carbene ligand associated with a Group 8 transition metal center. The molecular structure of the complexes can be altered so as to provide a substantial latency period. The complexes are particularly useful in catalyzing ring closing metathesis of acyclic olefins and ring opening metathesis polymerization of cyclic olefins.