Iron Fluoride/N-Heterocyclic Carbene Catalyzed Cross Coupling­ between Deactivated Aryl Chlorides and Alkyl Grignard Reagents with or without β-Hydrogens

Abstract

High-yielding cross-coupling reactions of various combinations of aryl chlorides and alkyl Grignard reagents have been developed by using an iron(III) fluoride/1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene (SIPr) catalyst composite. The iron(III) fluoride/SIPr-catalyzed aryl–alkyl coupling demonstrates unprecedented scope for both aryl chlorides and alkyl Grignard reagents, thus enabling the first efficient coupling of electron-rich (deactivated) aryl chlorides with alkyl Grignard­ reagents without β-hydrogens. The present reaction is also effective for diverse alkyl Grignard reagents such as (trimethylsilyl)methyl, primary, and secondary alkyl Grignard reagents.

Key words

C–C bond formation - cross coupling - iron fluoride - N-heterocyclic carbene - aryl chloride

• References

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See also selected papers from our group:
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