34 research outputs found
A Solvent-free Synthesis of Polyhydroquinolines via Hantzsch Multicomponent Condensation Catalyzed by Nanomagnetic-supported Sulfonic Acid
Get PDFA simple and efficient procedure for the synthesis of polyhydroquinolines was developed, involving a one-pot four-component Hantzsch condensation of aromatic aldehydes, 1,3-cyclohexanediones, alkyl acetoacetate and ammonium acetate in the presence of a catalytic amount of nanomagnetic-supported sulfonic acid under solvent-free conditions. The method offers several advantages including high yields, short reaction times, a simple work-up procedure and catalyst reusability for several runs. Furthermore, easy isolation of the catalyst from the reaction mixture was enabled by use of an external magnet.KEYWORDS Nanomagnetic-supported sulfonic acid, multicomponent reaction, solvent-free conditions, heterocyclic compound, Hantzsch reaction
Oxidation of tricyclic antidepressant drugs with chloramine-T in acidic solutions: kinetic, mechanistic and thermodynamic studies
Get PDFAn Efficient One‐Pot, Multicomponent, and Green Solvent Protocol for the Synthesis of Dihydropyridine Derivatives
No full textNano-sized glass as an economically viable and eco-benign support to anchor heteropolyacids for green and sustainable chemoselective oxidation of sulfides to sulfoxides
No full textHighly efficient and recyclable phosphoric acid functionalized zirconia encapsulated-Fe3O4 nanoparticles: clean synthesis of 1,4-dihydropyridine and 1-amidoalkyl-2-naphthol derivatives
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Rhodium(III) Catalyzed and Uncatalyzed Kinetic Spectrophotometric Oxidation of Amodiaquine Hydrochloride With Chloramine-T in Presence of Alkaline Buffer: A Mechanistic Chemistry
No full textp-Toluidine–acetic acid as a catalyst for a one-pot efficient synthesis of quinoxaline and pyridopyrazin derivatives contain polyhydroxy chain with use of monosaccharides
No full textA convenient, simple and one-pot synthesis of dibenzoxanthenes and tetrahydrobenzoxanthenes by nanotitania-supported sulfonic acid as an efficient and highly reusable nanocatalyst
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