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Dihydrogen activation by intermolecular rare-earth aryloxide/N-heterocyclic carbene Lewis pairs

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Abstract

Dihydrogen was readily activated by combination of homoleptic rare-earth metal aryloxides, RE(OAr)3 (RE = La, Sm, and Y) with N-heterocyclic carbenes (NHCs) under mild conditions. RE(OAr)3 were found to be active catalysts for the reductive hydrogenation of NHCs to aminals under 1 bar of H2. In addition, the La/NHC pair also exhibited frustrated Lewis pair (FLP)-like reactivity towards carbon dioxide and phenylacetylene, affording 1,2-addition and deprotonation products, respectively.

Graphical abstract: Dihydrogen activation by intermolecular rare-earth aryloxide/N-heterocyclic carbene Lewis pairs

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Publication details

The article was received on 28 Aug 2019, accepted on 26 Sep 2019 and first published on 27 Sep 2019


Article type: Communication
DOI: 10.1039/C9CC06676D
Chem. Commun., 2019, Advance Article

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    Dihydrogen activation by intermolecular rare-earth aryloxide/N-heterocyclic carbene Lewis pairs

    K. Chang, Y. Dong and X. Xu, Chem. Commun., 2019, Advance Article , DOI: 10.1039/C9CC06676D

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