title: Visible-Light-Promoted Dual C-C Bond Formations of Alkynoates via a Domino Radical Addition/Cyclization Reaction: A Synthesis of Coumarins.
abstract: A visible-light-promoted, mild, and direct difunctionalization of alkynoates has been accomplished. This procedure provides a new strategy toward synthesis of the coumarin core structure by photoredox-mediated oxidation to generate the α-oxo radical, which supervenes a domino radical addition/cyclization reaction in moderate to good yields with high regioselectivity at ambient temperature.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China.
authors.forename: Shangbiao
authors.initials: S
authors.lastname: Feng
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China.
authors.forename: Xingang
authors.initials: X
authors.lastname: Xie
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China.
authors.forename: Lin
authors.initials: L
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China.
authors.forename: Zhuliang
authors.initials: Z
authors.lastname: Zhong
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China.
authors.forename: Dengyu
authors.initials: D
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300071, People's Republic of China.
authors.forename: Xuegong
authors.initials: X
authors.lastname: She