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H2 Cleavage, Hydride Formation, and Catalytic Hydrogenation of Imines with Zinc Complexes of C5Me5 and N-Heterocyclic Carbenes

Authors


  • P.J. thanks the Alexander von Humboldt Foundation for a Feodor Lynen Research Fellowship. D.W.S. gratefully acknowledges the financial support of the NSERC of Canada and the award of a Canada Research Chair.

Abstract

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Decamethylzincocene, [ZnCp*2], reacts with H2 to give the reduced ZnI compound [Zn2Cp*2]. In the presence of coordinating and (more efficiently) of non-coordinating N-heterocyclic carbenes (NHCs), the catalytic hydrogenation of imines with H2 is achieved. The monomeric hydride [Zn(Cp*)(H)(SIMes)] is presented and its mechanistic implications are considered.

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