Synthesis and properties of 1,2-dihydropyridazino[4,5-b]indole

The intramolecular cyclization of 2-indoylhydrazones of aromatic aldehydes leads to 1-aryl-1,2-dihydropyridazino [4,5-b]indol-4-ones. The chemical properties of the compounds obtained were studied.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1654–1658, December, 1973.