A Masked Cuprous Hydride as a Catalyst for Carbonyl Hydrosilylation in Aqueous Solutions.

Author(s) Ritter, F.; Mukherjee, D.; Spaniol, T.P.; Hoffmann, A.; Okuda, J.
Journal Angew Chem Int Ed Engl
Date Published 2019 Feb 04

Redox-unstable cuprous hydridotriphenylborate was isolated as an N-heterocyclic carbene adduct [(IPr)Cu(HBPh )] (IPr=1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) with good thermal stability. Although this compound displays a contact ion-pair structure, Cu H-like catalytic activity was envisaged in carbonyl hydrosilylation. Sufficient moisture stability allowed the catalysis in aqueous/organic media. Mechanistic study further showed that a phenyl group on the borate anion is abstracted by [(IPr)Cu] to give the cationic organocopper complex [(IPr) Cu (μ-Ph)][BPh ].

DOI 10.1002/anie.201811890
ISSN 1521-3773
Citation Angew Chem Int Ed Engl. 2019;58(6):18181822.

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