Kevin Kuhn

US Patent:

20110087032, Apr 14, 2011

Filed:

Nov 10, 2008

Appl. No.:

12/741568

Inventors:

Kevin Kuhn - Pasadena CA, US
Robert H. Grubbs - South Pasadena CA, US

Assignee:

MATERIA, INC. - PASADENA CA
CALIFORNIA INSTITUTE OF TECHNOLOGY - PASADENA CA

International Classification:

C07D 233/06

US Classification:

5483541

Abstract:

Methods for the preparation of saturated imidazolinium salts and related compounds that comprises reaction of formamidines with compounds such as dihaloethane and an optional base are disclosed. Alternatively, the imidazolinium salts and related compounds can be prepared in a one-step process without purification of the formamidine reactant. These methods make it possible to obtain numerous imidazolinium salts and related compounds under solvent-free reaction conditions and in excellent yields.

US Patent:

20110124868, May 26, 2011

Filed:

Apr 9, 2009

Appl. No.:

12/936917

Inventors:

Robert H. Grubbs - South Pasadens CA, US
Cheol Keun Chung - Montrose CA, US
Jean-Baptiste Bourg - Riverside CA, US
Kevin Kuhn - Pasadena CA, US

Assignee:

MATERIA, INC. - Pasadena CA
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA

International Classification:

C07F 15/00
C07D 233/06
C07C 67/333
C07C 67/343
C07C 6/02

US Classification:

546 4, 5483541, 548103, 560122, 560104, 585601

Abstract:

This invention relates generally to olefin metathesis, more particularly, to tri- or tetra-substituted imidazolinium salts which are precursors to N-heterocyclic carbene (NHC) ligands with tri- or tetra-substituted imidazolinium rings, organometallic ruthenium complexes comprising gem di-substituted imidazolinium NHC ligands, organometallic ruthenium complexes comprising tri- or tetra-substituted imidazolinium NHC ligands, and to olefin metathesis methods using them. The catalysts and methods of the invention have utility in the fields of catalysis, organic synthesis, and industrial chemistry.