Fig. 1: Generation of aryl radicals from aryl (pseudo)halides in copper-mediated etherification reactions. | Nature Synthesis

Fig. 1: Generation of aryl radicals from aryl (pseudo)halides in copper-mediated etherification reactions.

From: Copper-mediated etherification via aryl radicals generated from triplet states

Fig. 1

a–c, Previous strategies: activation of aryl bromides via atom transfer with silyl radical10 (a), activation of aryl halides via SET with excited-state [CuI] species13,14 (b) and activation of aryl sulfonium salts via SET with photocatalyst26,27,28,29 (c). d, This work: activation of aryl halides via energy transfer or direct excitation. PC, photocatalyst; TT, thianthrenium; TFT, tetrafluorothianthrenium; PS, photosensitizer; EnT, energy transfer; OA, oxidative addition.

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