3357-23-1Relevant academic research and scientific papers
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
Anbhule, Prashant V.,Dhengale, Shankar D.,Kolekar, Govind B.,Rode, Chandrashekhar V.
, p. 2083 - 2093 (2022/02/03)
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
