Se what I mean? Metal-free oxidative syntheses of benzo[d]imidazo[2,1-b]benzo-thiazoles, benzimidazole-2-thiones, N-aryl benzimidazoles, and benzo[d]imidazo[2,1-b]benzoselenozoles are described. CN, CS, and CSe bonds are formed from by aromatic CH functionalization promoted by phenyliodine(III) diacetate. EDG=electron-withdrawing group; EWG=electron-donating group; HFIP=1,1,1,3,3,3,-hexafluoro-2-propanol; TFA=trifluoroacetic acid.
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Kumar et al. (2013) studied this question.
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