Palladium-Mediated Heck-Type Reactions of [(Bromodifluoromethyl)sulfonyl]benzene: Synthesis of α-Alkenyl- and α-Heteroaryl-Substituted α,α-Difluoromethyl Phenyl Sulfones
Palladium-catalyzed Heck-typereactions of [(bromodifluoromethyl)sulfonyl]benzene (1) with styrene derivatives and heteroaromatic compounds successfully gave α-alkenyl- and α-heteroaryl-substitutedα,α-difluoromethylphenylsulfones, respectively.
Copper-Catalyzed Di- and Trifluoromethylation of α,β-Unsaturated Carboxylic Acids: A Protocol for Vinylic Fluoroalkylations
作者:Zhengbiao He、Tao Luo、Mingyou Hu、Yanjing Cao、Jinbo Hu
DOI:10.1002/anie.201200140
日期:2012.4.16
Dual action: The Lewis acid CuF2⋅2 H2O efficiently catalyzes the reaction between electrophilic fluoroalkylating agents and α,β‐unsaturated carboxylic acids by dually activating both reactants, thus affording di‐ and trifluoromethyl alkenes in high yields with excellent E/Z selectivity.