title: Synthesis of fused polycycles from propargylic compounds with terminal alkynes via a palladium-catalyzed tandem C-H activation/biscyclization process.
abstract: Various benzo[b]fluorene and fluorene derivatives have been prepared from propargylic compounds with terminal alkynes through a novel palladium-catalyzed tandem biscyclization reaction. This reaction involved a sequence of carboannulation, coupling, C-H activation and C-C bond formation process. A plausible mechanism has been proposed that was consistent with the deuterium-labeling experiment.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China.
authors.forename: Li-Na
authors.initials: LN
authors.lastname: Guo
authors.forename: Xin-Hua
authors.initials: XH
authors.lastname: Duan
authors.forename: Xue-Yuan
authors.initials: XY
authors.lastname: Liu
authors.forename: Jie
authors.initials: J
authors.lastname: Hu
authors.forename: Hai-Peng
authors.initials: HP
authors.lastname: Bi
authors.forename: Yong-Min
authors.initials: YM
authors.lastname: Liang