University of New Orleans Research and Technology Foundation, Inc.

Chunming Zhang

Steven P Nolan

Jinkun Huang

Mark L Trudell

Use of a catalyst system comprising nickel, palladium, or platinum and imidazoline-2-ylidene of imidazolidine-2-ylidene in suzuki coupling reactions

Use of catalyst system comprising nickel, palladium, or platinum and imidazoline-2-ylidene or imidazolidine-2-ylidene in amination reactions

Use of a catalyst system comprising nickel, palladium, or platinum and imidazoline-2-ylidene or imidazolidine-2-ylidene in kumada coupling reactions

Use a catalyst system comprising nickel palladium or platinum and imidazoline-2-ylidene or imidazolidine-2-ylidene in stille coupling reactions

This invention provides a catalyst system useful in many coupling reactions, such as Suzuki, Kumada, Heck, and amination reactions. The catalyst system of the present invention makes use of N-heterocyclic carbenes or their protonated salts. The composition of the catalyst system comprises at least one transition metal compound and at least one N-heterocyclic carbene or its protonated salt. This invention further provides novel N-heterocyclic carbenes and their protonated salts. One type of N-heterocyclic carbene used in this invention is an imidazolinc-2-ylidene wherein the 1 and 3 positions are each, independently, substituted by an aromatic group in which each ortho position is, independently, substituted by a secondary or tertiary group which has at least three atoms.

Catalyst system comprising transition metal and imidazoline-2-ylidene or imidazolidine-2-ylidene

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New Orleans, LA, United States of America

Chunming Zhang