title: [Studies on ring-opening of heterocyclic compounds. IV. Alternative preparation of N-substituted iminopyridinium and N-substituted iminoisoquinolinium betaines].
mesh_terms: D001622:Betaine / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D006834:Hydrazines; D007097:Imines; D007259:Infrared Rays; D007546:Isoquinolines / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D011726:Pyridinium Compounds / Q000138:chemical synthesis*; D013057:Spectrum Analysis
chemical_list: D006834:Hydrazines; D007097:Imines; D007546:Isoquinolines; D011726:Pyridinium Compounds; D001622:Betaine