title: Unexpected hydrobromic acid-catalyzed C-C bond-forming reactions and facile synthesis of coumarins and benzofurans based on ketene dithioacetals.
authors.affiliation: Department of Chemistry, Northeast Normal University, Changchun, 130024 P. R. China.
authors.forename: Hongjuan
authors.initials: H
authors.lastname: Yuan
authors.forename: Mang
authors.initials: M
authors.lastname: Wang
authors.forename: Yingjie
authors.initials: Y
authors.lastname: Liu
authors.forename: Lili
authors.initials: L
authors.lastname: Wang
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Qun
authors.initials: Q
authors.lastname: Liu