posted on 2021-03-05, 21:13authored byToshiya Ikeuchi, Keiichi Hirano, Masanobu Uchiyama
Carefully
designed cyclic hydrosilanes enable trans-selective
hydrosilylation of unactivated alkynes without transition
metal catalysts via silicate formation. Employment of sterically demanding
bidentate ligands of silicon increases steric congestion upon silicate
formation, and this strain-imposing strategy facilitates hydride transfer.
This hydrosilylation provides efficient access to diverse benzosiloles,
silaphenalenes, and related silacycles.