Abstract
Nano-[Fe3O4@SiO2/N-propyl-1-(thiophen-2-yl)ethanimine][ZnCl2] as a nano magnetite Schiff base complex and reusable catalyst was successfully applied for the preparation of some pyrido[2,3-d]pyrimidines by the reaction of aryl aldehyde, malononitrile, and 6-amino-1,3-dimethyluracil with high yields and short reaction times.
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