Efficient and metal-free oxidation of 1,4-dihhdropyridine and Urazole derivatives with poly-(4-vinylpyridinium nitrate) and cellulose sulfuric acid

Urazole derivatives ( 1,2,4-triazolidine -3,5-diones) are very interesting five-membered heterocyclic compounds, which at position 4 cm can provide a wide variety of aliphatic. In a 50-ml round bottomed flask , 2ml of HNO3 (65%) and 3.03g of poly – (4-vinyl pyridine ) was stirred for 1 h and them kept at 500C for 48 h to quantitavely obtain dry poly (4-vinylpyridinumnitrate) as a while crystalline solid.

Keywords:

Urazole , poly vinyl pyridinium , triazolidine , Cellulose sulfuric Acid , reaction