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A POCl3 catalyzed, efficient, one-step and solvent-free synthesis of novel thieno[2,3-d]pyrimidin-4(3H)-one derivatives from 2-amino-4,5-substitutedthiophene-3-carbonitrile has been developed under conventional heating and microwave irradiation. The formation of compounds was confirmed using elemental analysis and spectroscopic techniques like IR, NMR (1H and 13C) and mass spectroscopy. Furthermore,...
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