Abstract
A simple and efficient selective diacetoxylation of 1,4-disubstituted 1,2,3-triazoles by Pd-catalyzed C–H bond activation is described. PhI(OAc)2 was used as an acetyloxy source to convert aromatic sp2 C–H bonds into C–O bonds with high selectivity by employing a 1,2,3-triazole ring as an elegant directing group. A range of 1,2,3-triazoles bearing two acetyloxy groups can be readily synthesized by the reaction.
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