Pyridazines, 90. On the synthesis of novel 1,2-diazine containing tricyclic systems: Preparation of tetraazaphenazines

Heterocycles

Volumn 51, Issue 7, 1999, Pages 1625-1630

  Heinisch, Gottfried ^a   Huber, Elisabeth ^a   Matuszczak, Barbara ^a  

^a UNIVERSITY OF INNSBRUCK   (Austria)

Author keywords

[No Author keywords available]

Indexed keywords

6 CHLORO N (3,6 DICHLOROPYRIDAZIN 4 YL) 3 (4 METHOXYBENZYLAMINO) N PROPYLPYRIDAZINE 4 CARBOXAMIDE; DIPYRIDAZINO[3,4B:3',4'E][1,4]DIAZEPINONE; PYRIDAZINE; PYRIDAZINE DERIVATIVE; TETRAAZAPHENAZINE; UNCLASSIFIED DRUG;

ARTICLE; CARBON NUCLEAR MAGNETIC RESONANCE; CHEMICAL REACTION; FLUORESCENCE; INFRARED SPECTROMETRY; IRRADIATION; ISOMERISM; PROTON NUCLEAR MAGNETIC RESONANCE;

EID: 0033166861     PISSN: 03855414     EISSN: None     Source Type: Journal    
DOI: 10.3987/com-99-8517     Document Type: Article

References (5)

1. For part 89 see ref. 2
2. G. Heinisch, E. Huber, B. Matuszczak, and K. Mereiter, Heterocycles, 1999, 51, 1035.
3. In both types of isomers the two pyridazine protons resonate at the same frequence.
4. H. Langhals and P. v. Unold, Angew. Chem., 1995, 107, 2436.
5. In this reaction mechanism, the existence of hydroxyl ions seems to be essential. Formation of compounds (3a) and (3b), however, can also be observed in dry solvents (reactions were performed with about 50 mg of 1 or 2a/b, respectively). This may be explained by the presence of molar amounts of water.