ChemInform Abstract: Iminophosphorane‐Mediated Synthesis of 2H‐Indazole Derivatives: Preparation of 2,3‐Diamino‐2H‐indazoles by Intramolecular Trapping of Phosphazides and 1H‐1,2,4‐Triazolo(2,3‐b)indazoles by a Tandem Aza‐ Wittig/ Heterocumulene‐Mediated Strategy. | Publicación