Au-Catalyzed Cross-Coupling of Arenes via Double C–H Activation
作者:Xacobe C. Cambeiro、Nanna Ahlsten、Igor Larrosa
DOI:10.1021/jacs.5b10593
日期:2015.12.23
The first methodology for Au(I/III)-catalyzed oxidative cross-coupling of arenes via double C-H activation has been developed. The reaction is fully selective for the cross-coupling between electron-rich hetero-/carbocyclic arenes and electron-poor arenes bearing relatively acidic C-H bonds: The inherently high cross-selectivity of the system obviates the need for directing groups or a large excess of one of the coupling partners.
Pd-Catalyzed Oxidative Cross-Coupling of Perfluoroarenes with Aromatic Heterocycles
作者:Chun-Yang He、Shilu Fan、Xingang Zhang
DOI:10.1021/ja106046p
日期:2010.9.22
A straightforward and practical method for direct Pd(OAc)(2)-catalyzed oxidative cross-coupling of electron-deficient perfluoroarenes with aromatic heterocycles has been developed. Because of its low catalyst loading (2.5 mol %), high reaction efficiency, good chemo- and regioselectivity, and excellent functional-group compatibility, this protocol provides a useful and operationally simple access to perfluoroarene thiophene structures of interest in functional materials for electronic devices.
Palladium-Catalyzed Aerobic Dehydrogenative Cross-Coupling of Polyfluoroarenes with Thiophenes: Facile Access to Polyfluoroarene–Thiophene Structure
作者:Chun-Yang He、Qiao-Qiao Min、Xingang Zhang
DOI:10.1021/om200873j
日期:2012.2.27
We report a Pd-catalyzed aerobic dehydrogenativecross-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