- Synthesis of indeno-[1,2-: B] -quinoline-9,11(6 H,10 H)-dione and 7,7-dimethyl-10-aryl-7,8-dihydro-5 H -indeno[1,2- b] quinoline-9,11(6 H,10 H)-dione derivatives in presence of heterogeneous Cu/zeolite-Y as a catalyst
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A simple method for the synthesis of indeno-[1,2-b]-quinoline-9,11-(6H,10H)-dione derivatives and 7,7-dimethyl-10-aryl-7,8-dihydro-5H-indeno[1,2-b]quinoline-9,11(6H,10H)-diones through the reaction of aromatic aldehydes, indan-1,3-dione, dimedone, and p-toluidine/ammonium acetate in the presence of heterogeneous CuO supported on a zeolite-Y catalyst has been investigated in ethanol under reflux conditions. By this method, the reaction time has been reduced, giving an excellent yield of the product. The catalyst was prepared by a hydrothermal method followed by a wet impregnation method. The catalyst had shown Br?nsted acid sites and Lewis acid sites. The used catalyst could be actively recycled with a marginal decrease in yield up to five recycles. The prepared catalyst was characterized by FT-IR, pyridine FT-IR, XRD, SEM, EDS, XPS, TEM, and BET surface area analysis. The synthesized compounds were characterized by FT-IR, 1H NMR, 13C NMR and GC-MS spectroscopy. This journal is
- Anbhule, Prashant V.,Dhengale, Shankar D.,Kolekar, Govind B.,Rode, Chandrashekhar V.
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p. 2083 - 2093
(2022/02/03)
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- Nano Fe2O3@SiO2–SO3H: efficient catalyst for the multi-component preparation of indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidine-2,4,6(3H)-trione derivatives
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A highly efficient multi-component reaction of structurally diverse aryl aldehydes, 6-amino-1,3-dimethylpyrimidine-2,4(1H,3H)-dione and 1H-indene-1,3(2H)-dione using nano Fe2O3@SiO2–SO3H as a catalyst is described. The products are a variety of indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidine-2,4,6(3H)-trione derivatives. The effect of the solvent on the product selectivity was investigated. The morphology, particle size distribution, and some properties of Fe2O3@SiO2–SO3H nanopowders have been characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), X-ray powder diffraction (XRD), N2 adsorption–desorption isotherms and thermogravimetric analysis (TGA) techniques.
- Ghashang, Majid,Guhanathan, Sai,Mansoor, S. Sheik
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p. 7257 - 7276
(2017/09/06)
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