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Reactions with Halogenated Compound: Synthesis of Several New Pyrazolo[3,2-c] triazine and 2-Benzenesulfonylglyoxal arylhydrazone Derivatives

Abdelhamid, Abdou O.    (Department of Science, King Khalid Military Academy   ); Attaby, Fawzy A.    (Department of Chemistry, Faculty of Science, Cairo University   ); Khalifa, Fathy A.    (Department of Chemistry, Faculty of Science, Cairo University   ); Ghabrial, Sami S.    (National Organization for Drug Control and Research  );
  • 초록

    Diazotized primary artomatic amines 4 coupled with the ketosulfones 1-3 in ethanol in the presence of sodium acetate at $0^\circ{C}$ to afford the corresponding bydrazones 5-7. Also diazotized 3-aminopyrazoles 14 coupled with 1-3 in ethanolic sodium acetate to give the pyrazolotriazines 18-20 in good yields. Compounds 5-7 and 18 can also be obtained from the reaction of hydraziodoyl halides 8-10 and 21 with sodium benzenesultinate. The hydrazones 11-13 can easy be oxidized to the hydrazones 5-7, using hydrogen peroxide in acetic acid.


  • 주제어

    Hydrazones .   pyrazolotriazines .   hydrazidoyl halides .   aminopyrazoles .   ketosulfones.  

 저자의 다른 논문

  • Attaby, Fawzy-A. (5)

    1. 1990 "Reactions with Activated Nitriles : A new route for the synthesis of new pyridine and pyrazolopyridine derivatives" Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 13 (3): 274~277    
    2. 1990 "Reactions with Hydrazidoyl Halides (V): Synthesis of Some Amidrazones, Hydrazides, Pyrazoles and Pyrazolo [3, 4-d] pyridazine Derivatives" Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 13 (4): 314~318    
    3. 1997 "Reactions of3-Aminopyazole Derivatives with Cyanothioacetamide and Its Derivatives:Synthesis and Reactions of Several New Pyrazole and Pyrazole[3,2-b]Pyrimidine Derivatives" Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 20 (4): 330~337    
    4. 1997 "Reactions of Pyrimidinonethione Derivatives;Synthesis of 2-Hydrazinopyrimidin-4-one, Pyrimido[1,2-a]-1,2,4-triazine, Triazolo-[1,2-a]pyrimidine, 2-(1-pyrazolo)Pyrimidine and 2-Arylhydrazonopyrimidine Derivatives" Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 20 (6): 620~628    
    5. 1999 "Synthesis and Antimicrobial Evaluation of New Pyridine, Thienopyridine and Pyridothienopyrazole Derivatives" Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 22 (2): 194~201    

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