Green and expeditious synthesis of 1,8-dioxodecahydroacridine derivatives catalysed by protic pyridinium ionic liquid

Abstract

The Hantzsch three-component condensation reaction of various aromatic aldehydes, 1,3-dione and aniline derivatives in the presence of 2-methylpyridinium trifluoromethanesulphonate ([2-MPyH]OTf) as green and highly efficient catalysts in water affords 1,8-dioxodecahydroacridine derivatives in good to excellent yields. This reaction has been carried out in the presence of 1 mol% of [2-MPyH]OTf at room temperature. The described novel synthesis method proposes several advantages of mild condition, short reaction times, high yields, simplicity and easy workup compared to the traditional method of synthesis. © Indian Academy of Sciences.