Multifunctional Catalytic Surface Design for Concerted Acceleration of One-Pot Hydrosilylation-CO 2 Cycloaddition

Silica-supported Rh-ammonium iodide catalyst showed high performance for hydrosilylation-CO cycloaddition reaction sequences. The catalyst was prepared by surface grafting of Rh and the silane-coupling reaction of the ammonium iodide moiety. The acceleration of each catalytic reaction was realized d...

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Bibliographic Details
Published in:Organic letters 2019-12, Vol.21 (23), p.9372-9376
Main Authors: Usui, Kei, Miyashita, Kodai, Maeda, Kyogo, Manaka, Yuichi, Chun, Wang-Jae, Inazu, Koji, Motokura, Ken
Format: Article
Language:English
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Summary:Silica-supported Rh-ammonium iodide catalyst showed high performance for hydrosilylation-CO cycloaddition reaction sequences. The catalyst was prepared by surface grafting of Rh and the silane-coupling reaction of the ammonium iodide moiety. The acceleration of each catalytic reaction was realized due to the concerted catalysis between Rh species, immobilized organic functions, and surface Si-OH groups. As a result, good to excellent yields of silyl carbonates were obtained from epoxyolefins, hydrosilanes, and CO under mild reaction conditions.
ISSN:1523-7060
1523-7052
DOI:10.1021/acs.orglett.9b03602