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'Quinazlinones' in keywords Facet   Publication Year 1980  [X]
Facet   section ZfN Section B:Volume 035  [X]
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1980[X]
1Author    El-Sayed Afsah, FathyA. Amer, MohamedA. Metwally, MohamedT. El-ZimaityRequires cookie*
 Title    Synthesis of Hexahydroindazole, Tetrahydro-[pyrimidoquinazolinone, benzodiisoxazolone] Derivatives and Anils from Diethyl l,4-Cyclohexanedione-2,5-dicarboxylate  
 Abstract    Treatment of diethyl l,4-cyclohexanedione-2,5-dicarboxylate (1) with hydrazine hydrate in glacial acetic acid afforded the diazobicycloocatdienedicarboxylate (2) and the azine (3). On the other hand, condensation of 1 with benzenesulphonylhydrazide in ethanolic solution gave the indazole derivative (4). Interaction of 1 with urea or hydroxyl-amine afforded the tetrahydropyrimidoquinazolinone (5) and the tetrahydrobenzodi-isoxazolone (6), respectively. Treatment of 1 with aniline gave the mono-anil (7) which, when subjected to Japp-Klingemann reaction with ja-anisidine gave the dihydrazonoanil (8) and their condensation with benzidine in acetic acid gave the hydrazonoketoester (9). On the other hand condensation of 7 with hydrazine hydrate in ethanolic solution af-forded the azobis (5-anilinoterephthalate) (10) and the hexahydrobenzodipyrazolone (11). 
  Reference    Z. Naturforsch. 35b, 1310—1312 (1980); received February 8/April 10 1980 
  Published    1980 
  Keywords    Indazolones, Isoxazolones, Quinazlinones, Synthesis 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1310.pdf 
 Identifier    ZNB-1980-35b-1310 
 Volume    35