Abstract
A facile and efficient method for the regioselective acetoxylation of 1,4-disubstituted 1,2,3-triazoles via Pd-catalyzed CH bond activation was developed. The cheap acetic acid was applied as the acetoxyl source to convert aromatic sp2 CH bonds into CO bonds in high regioselectivity, employing 1,2,3-triazole as an elegant directing group and K2S2O8 as the oxidant. A range of 1,2,3-triazoles bearing acetoxyl group can be synthesized with the reaction facilely.
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