83773-22-2Relevant academic research and scientific papers
Synthesis of 2-Substituted 3-Aryl/Heteroaryl-2,3,3a,10-tetrahydro-4-methylpyrazolobenzodiazepines
El-Shafei, A. K.,El-Kashef, H. S.,El-Khawaga, A. M.
, p. 655 - 657 (2007/10/02)
2,3-Dihydro-4-methyl-1H-1,5-benzodiazepin-2-one (1A) and its N-alkyl derivatives (1B,C) undergo condensation with nitroso compounds as well as with a series of aromatic aldehydes to afford 3-anils (2) and 3-arylidene derivatives (3), respectively.Compounds 3 react with hydrazine hydrate in glacial acetic acid or with phenylhydrazine in pyridine to furnish the title compounds (4).The UV-visible spectra of all the compounds in ethanol have been recorded and the absorption bands assigned.
