PYRIDAZINE DERIVATIVES AND RELATED COMPOUNDS. PART 6. SYTNTHESIS OF TRIAZOLOPYRAZOLOPYRIDAZINE, PYRIDOTRIAZOLOPYRAZOLOPYRIDAZINE AND NAPHTHOPYRIDAZINOPYRAZOLOTRIAZINE DERIVATIVES

Article abstract of DOI:10.3987/COM-90-5623

1,2,4-Triazolo<3',4':5,1>pyrazolo<3,4-c>pyridazine, pyrido<2',1':3,2><1,2,4>triazolo<5',1':5,1>pyrazolo<3,4-c>pyridazine, naphtho<2,1-e>pyridazino<3',4':3,4>pyrazolo<5,1-c><1,2,4>triazine and pyridazino<3',4':3,4>pyrazolo<5,1-c><1,2,4>triazin-4(1H)-one were synthesized from 3-amino-1H-pyrazolo<3,4-c>pyridazine.