Deoxygenative Coupling of CO with a Tetrametallic Magnesium Hydride Complex

Author:

Yang Wenbang1,White Andrew J. P.1,Crimmin Mark R.1ORCID

Affiliation:

1. Department of Chemistry Imperial College London Molecular Sciences Research Hub Imperial College London 82 Wood Lane, White City London W12 0BZ UK

Abstract

AbstractAddition of CO to a tetrametallic magnesium hydride cluster results in both carbon‐carbon bond formation and deoxygenation to generate an acetaldehyde enolate [C2OH3] which remains coordinated to the cluster. To the best of our knowledge, this is the first example of formation of an isolable complex containing an [C2OH3] fragment from reaction of CO with a metal hydride, and the first example of CO homologation and deoxygenation at a main group metal. DFT studies suggest that key steps in the mechanism involve nucleophilic attack of an oxymethylene on a formyl ligand to generate an unstable [C2O2H3]3− fragment, which undergoes subsequent deoxygenation.

Funder

Engineering and Physical Sciences Research Council

Publisher

Wiley

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