title: Rhodium-Catalyzed ortho-Selective C-F Bond Borylation of Polyfluoroarenes with Bpin-Bpin.
abstract: An ortho-selective C-F bond borylation between N-heterocycle-substituted polyfluoroarenes and Bpin-Bpin with simple and commercially available [Rh(cod)2 ]BF4 as a catalyst is now reported. The reaction proceeds under mild reaction conditions with high efficiency and broad substrate scope, even toward monofluoroarene, thus providing a facile access to a wide range of borylated fluoroarenes that are useful for photoelectronic materials. Preliminary mechanistic studies reveal that a Rh(III/V) catalytic cycle via a key intermediate rhodium(III) hydride complex [(H)Rh(III) Ln (Bpin)] may be involved in the reaction.
authors.affiliation: Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032 (China).
authors.forename: Wen-Hao
authors.initials: WH
authors.lastname: Guo
authors.affiliation: Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032 (China).
authors.forename: Qiao-Qiao
authors.initials: QQ
authors.lastname: Min
authors.affiliation: Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032 (China).
authors.forename: Ji-Wei
authors.initials: JW
authors.lastname: Gu
authors.affiliation: Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032 (China). xgzhang@mail.sioc.ac.cn.
authors.forename: Xingang
authors.initials: X
authors.lastname: Zhang
keywords: CF activation; borylation; fluoroarenes; homogeneous catalysis; rhodium