title: Ligand-free hydroboration of alkynes catalyzed by heterogeneous copper powder with high efficiency.
abstract: Regioselective hydroboration of terminal and internal alkynes is realized by using 10 mol% copper powder (0.3-1 μm) at room temperature. 24 alkynes were efficiently converted into vinylboronates in up to 96% yield without addition of any ligand or additive.
authors.affiliation: Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China. ydli@mail.tsinghua.edu.cn fuhua@mail.tsinghua.edu.cn.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhao
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Niu
authors.forename: Hua
authors.initials: H
authors.lastname: Fu
authors.forename: Yadong
authors.initials: Y
authors.lastname: Li