posted on 2021-01-15, 16:38authored byYeong
Bum Kim, Dongwook Kim, Shashikant U. Dighe, Sukbok Chang, Jung-Woo Park
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.