Pyridine Derivatives of Acridine and Quinoline

Synthesis of some derivatives of 1,8-dioxo-octa-hydro xanthene and 9-aryl-hexahydro acridine-1,8-dione using metal ion-exchanged NaY zeolite as heterogeneous catalyst

“…Quaternary ammonium salts of the synthesized acridine derivatives as well as a metal complex with palladium PdLCl 2 were obtained. 38 Liu et al In 2020 a new series of pyrazino[2,3- a ]acridine derivatives were prepared, via three-component reaction of quinoxaline-6-amine, aromatic aldehydes, and 5,5-dimethyl cyclohexane-1,3-dione or cyclohexane-1,3-dione in ethanol as a solvent and under rehabilitation conditions. 39 In 2021, Mehrabadi et al was synthesized via preparing pistachio hull as a support followed by treatment with titanium tetrachloride (TiCl 4 ) as a nanocatalyst in a one-pot, three-component condensation reaction of aromatic aldehydes, dimedone and kojic acid in refluxing ethanol to furnish dihydropyrano[3,2- b ]chromendione derivatives.…”