Recyclable Bi<sub>2</sub>WO<sub>6</sub>-nanoparticle mediated one-pot multicomponent reactions in aqueous medium at room temperature
Banoth Paplal(National Institute of Technology Warangal), Sakkani Nagaraju(National Institute of Technology Warangal), Veerabhadraiah Palakollu(Indian Institute of Technology Gandhinagar), Kodam Sujatha(National Institute of Technology Warangal), Sriram Kanvah(Indian Institute of Technology Gandhinagar), B. Vijaya Kumar(Nizam's Institute of Medical Sciences), Dhurke Kashinath(National Institute of Technology Warangal)
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Abstract
Room temperature multicomponent reactions (MCRs) are reported using Bi<sub>2</sub>O<sub>3</sub>, BiVO<sub>4</sub>, and Bi<sub>2</sub>WO<sub>6</sub> (nanoparticle) as heterogeneous catalysts. Among these, Bi<sub>2</sub>WO<sub>6</sub> (5 mol%) nanoparticles showed excellent reactivity for the synthesis of functionalized dihydropyridine, polyhydroquinoline, 4<italic>H</italic>-chromene and 2-amino-4<italic>H</italic>-benzo[<italic>b</italic>]pyran derivatives in aqueous medium.
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