Efficient cross-coupling of aryl Grignard reagents with alkyl halides by recyclable ionic iron (III) complexes bearing a bis (phenol)-functionalized benzimidazolium …
Following the original work of Kochi et al., 2a recent reports on the alkylation of aryl Grignard reagents using unactivated primary or secondary alkyl halides show the potential of iron-based catalysts, whereas palladium- or nickel-based catalysts do not perform as well because of competing β-hydride elimination reactions. 2b–e To date, a variety of iron-based catalysts have been designed and proven active for such cross-coupling. For example, while simple iron salts such as ...
