Abstract.A series of novel dithioxopyrido [2,3-d:6,5-d ' ]dipyrimidine-4,6-dione derivatives were synthesized through a one-pot three-component approach using ] catalyzed condensation of 6-amino-2,3-dihydro-2-thioxopyrimidin-4(1H)-one and various substituted aryl aldehydes at 110 o C in DMF. In this protocol the use of nanocatalyst provided a green, useful and rapid method to generate the products in short reaction times and good to excellent yields (70-95%) and the catalyst is easily separated by applying an external magnetic field.
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