title: Palladium Catalyzed C-I and Vicinal C-H Dual Activation of Diaryliodonium Salts for Diarylation: Synthesis of 4,5-Benzocoumarins.
abstract: With a strategy that makes use of palladium activation of both C-I and vicinal C-H bonds of diaryliodonium salts, an unprecedented approach in diarylation of coumarins was reported. As such, a wide range of 4,5-benzocoumarins with potential fluorescence properties have been synthesized in good yields. A series of experiments suggested that the formation of two carbon-carbon bonds proceeded in a synergetic manner.
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology , Meilong Road, 130, Shanghai 200237, P. R. China.
authors.forename: Xunshen
authors.initials: X
authors.lastname: Wu
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology , Meilong Road, 130, Shanghai 200237, P. R. China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, China.
authors.forename: Jianwei
authors.initials: J
authors.lastname: Han
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology , Meilong Road, 130, Shanghai 200237, P. R. China.
authors.forename: Limin
authors.initials: L
authors.lastname: Wang
mesh_terms: D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D003374:Coumarins / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D010165:Palladium / Q000737:chemistry*; D012492:Salts
chemical_list: D003374:Coumarins; D012492:Salts; D010165:Palladium; D002244:Carbon