Cobalt-Hydride-Catalyzed Hydrosilylation of 3‑Alkynes Accompanying π‑Bond Migration

We describe a protocol for cobalt-catalyzed hydrosilylation of 3-alkynes with accompanying π-bond migration. Mechanistic studies indicate that (i) cobalt­(I)-hydride bearing a bulky bisphosphine ligand is the key intermediate and (ii) π-bond migration occurs prior to hydrosilylation. The cascade pro...

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Bibliographic Details
Published in:ACS catalysis 2021-02, Vol.11 (3), p.1548-1553
Main Authors: Kim, Yeong Bum, Kim, Dongwook, Dighe, Shashikant U, Chang, Sukbok, Park, Jung-Woo
Format: Article
Language:English
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Summary:We describe a protocol for cobalt-catalyzed hydrosilylation of 3-alkynes with accompanying π-bond migration. Mechanistic studies indicate that (i) cobalt­(I)-hydride bearing a bulky bisphosphine ligand is the key intermediate and (ii) π-bond migration occurs prior to hydrosilylation. The cascade process selectively furnishes terminal branched allylsilanes under mild conditions.
ISSN:2155-5435
2155-5435
DOI:10.1021/acscatal.0c05424