The behaviour of 4-aryl-hydrzono-2-phenyl-2-oxozolin-5-one towards phenols, aromatic amines, 1,2,4-triazol-5-amino and acylhydrazines to give the 1,2,4-triazol derivatives have been studied. Fries rearrangement products have been obtained by refluxing the products resulting from the starting material and phenols or amines with anhydrous zinc chloride and acetic acid. Reactions of Fries rearrangement products with malononitrile have also been studied. Interestingly, reaction of oxazolinone derivative with or without acetophenone give one and the same product benzoylamino-6-methyl-cinnolin-4-ol. The mechanism of the later reaction has been discussed. The structure of the products has been studied by different spectroscopic methods.
A M RADWAN ,E E ESLAM ,R KASSAB ,M H EL-NAGDY ,
You can use below filter to find your desired issue