Efficient and Mild Synthesis of Pyranopyrimidines Catalyzed by Decorated Multi-walled Carbon Nanotubes Bearing Cobalt, Nickel, and Copper Metals in Water

The multicomponent reactions (MCRs) produce one compound from three or more reactants. Due to the innumerable combination possibilities of reagents, MCRs are popular because their simplicity and versatility. In this research, an one-pot three-components reaction was carried out between 1,3-diethyl barbituric acid, malononitrile, aldehydes in presence Cu/Co/Ni/MWCNTs as a recyclable catalyst. This catalyst indicated high catalytic activity with good proficiency reusability under mild condition. method proposed numerous materials such being environmentally amicable product yields short times at ambient temperature. catalysts were collected specified by diverse spectroscopic techniques as; FT-IR, X-ray diffraction, scanning electron microscopy. After finalizing reaction, resulted compounds purified, identified melting points, infrared spectroscopy (FT-IR), magnetic resonance hydrogen nucleus (1H NMR) techniques.