title: [Studies of heterocyclic compounds. XI. The synthesis of oxazolo[3,2-b]-pyridazinium perchlorates and their reactions with some C-nucleophiles (author's transl)].
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D010080:Oxazoles / Q000138:chemical synthesis*; D011724:Pyridazines / Q000138:chemical synthesis*
chemical_list: D010080:Oxazoles; D011724:Pyridazines