LAUSR

AbstractCuI-catalyzed selective Ullmann C–O coupling of 1,4-disubstituted 1,2,3-triazole bromides with phenols were achieved through the coordination of N(2) atom. The ortho C–Br bond in N(1) aryl can be selectively coupled with phenols, while other C–Br bonds remain inert, generating ortho aryloxyl 1,4-diaryl 1,2,3-triazoles. Graphical AbstractCuI-catalyzed selective Ullmann C–O couplings of 1,4-disubstituted 1,2,3-triazole bromides with phenols were achieved through the coordination of N(2) atom in triazole. The ortho C-Br bond in N(1) of aryl can be selectively coupled with phenols, while other C-Br bonds remain inert, generating ortho-aryloxyl 1,4-diaryl 1,2,3-triazoles.