Copper-Catalyzed Intramolecular C-H Alkoxylation of Diaryltriazoles: Synthesis of Tricyclic Triazole Benzoxazines.

An efficient copper-catalyzed intramolecular C–H alkoxylation of 1,4-disubstituted 1,2,3-triazoles has been developed. The chemistry was applied to a wide range of substrates, generating tricyclic ...