Convenient preparation of copper(I) N-heterocyclic carbene complexes under mild conditions

Author:

Lim Meilin Q.1,Keske Eric C.1ORCID

Affiliation:

1. Department of Chemistry, Trent University, Chemical Sciences Building, 1600 West Bank Road, Peterborough, ON K9L 0G2, Canada

Abstract

This work describes a new method for the preparation of copper N-heterocyclic carbene (NHC) complexes, which is conducted under air with mild conditions, using bench-stable precursors and a weak base (NEt3). Under optimized conditions, the complexes were prepared in short reaction times of 1 h, giving moderate to good yields after purification by column chromatography. Commonly utilized NHC–HCl salts were found to be applicable reacting with CuCl or CuI giving [(NHC)CuX]-type complexes (X = Cl, I). This study adds to the growing literature in the preparation of catalytically relevant transition metal NHC complexes under mild and operationally simple conditions.

Publisher

Canadian Science Publishing

Subject

Organic Chemistry,General Chemistry,Catalysis

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