Dial-a-base mechanochemical synthesis of N-heterocyclic carbene copper complexes

Liquid assisted ball milling of [NHC]HBr (NHC = N-heterocyclic carbene) salts with copper( i ) chloride, and a range of alkali metal complexes was shown to efficiently produce (NHC)CuX (NHC = normal or RE-NHC, X = halide, alkoxide, amide, alkyl, aryl; RE-NHC = ring-expanded NHC). Ball milling of 5-,...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2024-02, Vol.53 (9), p.399-3993
Main Authors: Babula, Dawid J, Charman, Rex S. C, Hobson, Josie A, Mahon, Mary F, Liptrot, David J
Format: Article
Language:English
Subjects:
Ball milling
Carbenes
Coordination compounds
Copper chloride
Copper compounds
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Summary:Liquid assisted ball milling of [NHC]HBr (NHC = N-heterocyclic carbene) salts with copper( i ) chloride, and a range of alkali metal complexes was shown to efficiently produce (NHC)CuX (NHC = normal or RE-NHC, X = halide, alkoxide, amide, alkyl, aryl; RE-NHC = ring-expanded NHC). Ball milling of 5-, 6-, and 7-membered N-heterocyclic carbene (NHC) salts, copper( i ) chloride and alkali metal bases including alkoxides, amides, and organolithium produces to 12 NHC-copper complexes in moderate to good yields.
ISSN:1477-9226
1477-9234
DOI:10.1039/d4dt00334a