ChemInform Abstract: Carbodiimide‐Mediated Annelation of a 1,2,4‐Triazole Ring into a Heterocyclic Ring: Synthesis of 1,2,4‐Triazolo(4,3‐b)triazole, Imidazo‐(1,2‐b)‐1,2,4‐triazole, and 1,2,4‐Triazolo(1,5‐d)‐1,2,4‐triazine Derivatives. | Publicación