Solvent-Free Ring Cleavage Hydrazinolysis of Certain Biginelli Pyrimidines
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DOI: 10.1155/2018/6354742
Abstract: Certain Biginelli pyrimidines with ester substitution in C5 were subjected to unexpected ring opening upon solvent-free reaction with hydrazine hydrate to give three products: pyrazole, arylidenehydrazines, and urea/thiourea, respectively. The nonisolable carbohydrazide intermediates are formed… read more here.
Keywords: free ring; biginelli pyrimidines; certain biginelli; ring cleavage ... See more keywords