Visible Light-Induced Copper-Catalyzed C-H Arylation of Benzoxazoles

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A general method for visible light-induced copper-catalyzed arylation of sp2 C-H bonds of azoles has been developed.The method employs aryl halide as the coupling partner,lithium alkoxide as base.A variety of azoles including benzooxazole and ben-zothiazole can be arylated.Furthermore,electron-poor heterocycles such as thiophene possessing one electron-withdrawing group can also be arylated.
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