Palladium-Catalyzed Aerobic Dehydrogenative Cross-Coupling of Polyfluoroarenes with Thiophenes: Facile Access to Polyfluoroarene–Thiophene Structure

We report a Pd-catalyzed aerobic dehydrogenative cross-coupling of polyfluoroarenes with thiophenes via 2-fold C–H functionalization. The advantages of this reaction are its high reaction efficiency, excellent functional group compatibility, and use of molecular O₂ as terminal oxidant. This reaction provides a useful and facile protocol for the preparation of polyfluoroarene–thiophene structure of interest in functional materials. Mechanistic studies revealed that the reaction is initiated by the C–H bond cleavage of polyfluoroarenes

Direct (Het)Arylation of Fluorinated Benzothiadiazoles and Benzotriazole with (Het)Aryl Iodides

A new and controllable method for the preparation of unsymmetrical and symmetrical fluorinated benzothiadiazole (FBT)–arene structures that can be applied in organic optoelectronic materials has been developed. The reaction proceeds under mild reaction conditions with high efficiency and shows excellent functional group compatibility, even toward bromide. Fluorinated benzotriazoles also take part in the reaction

Pd-Catalyzed Dehydrogenative Cross-Coupling of Polyfluoroarenes with Heteroatom-Substituted Enones

The first example of intermolecular regioselective α-arylation of heteroatom-substituted enones with polyfluoroarenes via twofold C–H bond functionalization using a palladium catalyst is reported. This approach provides rapid access to a wide range of α-fluoroarylated enones of interest in life science

Efficient difluoromethylation of isoflavonoids and flavonoid under mild conditions

<p>A simple and efficient protocol for difluoromethylation of isoflavones, flavonoids, and coumarins has been developed. The protocol uses readily available, non-ozone-depleting and easy handling BrCF₂PO(OEt)₂ as difluorocarbene precursor. The reaction underwent the formation of difluorocarbene under mild reaction conditions with relatively weak base therefore demonstrates high selectivity. Application of the reaction led to difluoromethylated biologically relevant molecules.</p

Pd-Catalyzed Dehydrogenative Cross-Coupling of Polyfluoroarenes with Heteroatom-Substituted Enones

The first example of intermolecular regioselective α-arylation of heteroatom-substituted enones with polyfluoroarenes via twofold C–H bond functionalization using a palladium catalyst is reported. This approach provides rapid access to a wide range of α-fluoroarylated enones of interest in life science

Visible-Light-Induced Direct Difluoroalkylation of Uracils, Pyridinones, and Coumarins

An efficient and general method for the synthesis of difluoroalkylated uracils, pyridinones, and coumarins through visible-light-induced reaction with commercial materials is developed. The strategy proceeds with high efficiency under mild reaction conditions and shows excellent functional group compatibility, even toward bromide and hydroxyl group, thus demonstrates high potent application in a late-stage fluoroalkylation. Moreover, the difluoroalkylated products can be further transformed to a diverse variety of difluoroalkylated heterocycles, including molecules of potential biological activity