title: [Synthesis of nitrogen analogs of bicyclobutylidenes].
mesh_terms: D001643:Bridged Bicyclo Compounds / Q000138:chemical synthesis*; D001952:Bridged-Ring Compounds / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D009584:Nitrogen
chemical_list: D001643:Bridged Bicyclo Compounds; D001952:Bridged-Ring Compounds; D009584:Nitrogen
vernacular_title: Uber die Synthese des Stickstoffanalogons vom Bicyclobutyliden.