Browsing by Author "El-Sharkawy, Karam A."

Filter results by typing the first few letters
Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    The reaction of beta-amino-alpha,gamma-dicyanocrotononitrile with acetophenone: Synthesis of pyridine, pyridazine and thiophene derivatives with antimicrobial activities
    (HRVATSKO FARMACEUTSKO DRUSTOV (HFD)-CROATION PHARMACEUTICAL SOC., 2008) Mohareb, Rafat M.; El-Sharkawy, Karam A.; Sherif, Sherif M.
    Condensation of beta-amino-alpha,gamma-dicyanocrotononitrile (1) with acetophenone gave 2-amino-4-phenylpenta-1,3-diene-1,1,3-tricarbonitrile (2). The latter product was used in a series of heterocyclization reactions with different reagents such as diazonium salts, hydrazines, hydroxylamines and elemental sulfur to give pyridazine, pyrazole, isoxazole and thiophene derivatives, respectively. On the other hand, it gave pyridine derivatives with aromatic aldehydes folowed by reaction with cyanomethylene reagents. The MIC values for the newly synthesized product were measured against E. coli, B. cereus, B. subtilis and C. albicans.