Exploiting the umpolung reactivity of diazo groups: direct access to triazolyl-azaarenes from azaarenes

Abstract

azaarene, at their α-position. Subsequent ylide formation and intramolecular 1,5-cyclization furnished 4,3-fused 1,2,4-triazolyl-azaarenes in good yields. The reaction is notable for its mild conditions, operational simplicity and fairly general scope.