title: Cobalt-Catalyzed Z-Selective Hydrosilylation of Terminal Alkynes.
abstract: A cobalt-catalyzed Z-selective hydrosilylation of alkynes has been developed relying on catalysts generated from bench-stable Co(OAc)2and pyridine-2,6-diimine (PDI) ligands. A variety of functionalized aromatic and aliphatic alkynes undergo this transformation, yielding Z-vinylsilanes in high yields with excellent selectivities (Z/E ratio ranges from 90:10 to >99:1). The addition of a catalytic amount of phenol effectively suppressed the Z/E-isomerization of the Z-vinylsilanes that formed under catalytic conditions.
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore.
authors.forename: Wei Jie
authors.initials: WJ
authors.lastname: Teo
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore.
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore.
authors.forename: Ye Wei
authors.initials: YW
authors.lastname: Tan
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore.
authors.forename: Shaozhong
authors.identifier: 0000-0003-1045-1940
authors.initials: S
authors.lastname: Ge
keywords: alkynes; cobalt; homogeneous catalysis; hydrosilylation; vinylsilanes