ChemInform Abstract: Heterocumulene‐Mediated Anellation of a (1,3,4)Thiadiazine or (1,3,4)Oxadiazine Ring into an Imidazole Ring: Preparation and Crystal Structure of Some Derivatives of the Unknown Imidazo(1,5‐d)(1,3,4)thiadiazine and Imidazo(1,5‐d)(1,3,4)oxadiazine Ring Systems. | Publicación