Photoinduced oxidative activation of electron-rich arenes: Alkenylation with H2 evolution under external oxidant-free conditions

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Abstract

The dehydrogenative cross-coupling of arenes and alkenes is a particularly ideal approach for the synthesis of aryl alkenes. Herein, we report a photo-induced C-H/C-H cross-coupling between electron-rich arenes and styrene derivatives using a dual catalytic system containing an acridinium photosensitizer and a cobaloxime proton-reducing catalyst. This catalytic system enables the Csp2-Csp2 bond formation accompanying H2 evolution. Various substituted aryl alkenes can be afforded with good to excellent yields and high β-regioselectivity.

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Hu, X., Zhang, G., Bu, F., Luo, X., Yi, K., Zhang, H., & Lei, A. (2018). Photoinduced oxidative activation of electron-rich arenes: Alkenylation with H2 evolution under external oxidant-free conditions. Chemical Science, 9(6), 1521–1526. https://doi.org/10.1039/c7sc04634k

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