Search

In this study, glycine-based ionic liquid ([Gly-H][OTs]) was synthesized through a reaction of glycine with ρ-toluenesulfonic acid in water. The synthesized IL was utilized for the one-pot, multi-component synthesis of 3,4-dihydropyrimidin-2(1H)-ones, 14-aryl-14H-dibenzo[a,j]xanthenes and 12-aryl-8,9,10,12-tetrahydrobenzo [a]xanthene-11-ones under solvent-free condition. The prepared IL indicates desirable catalytic activity in organic reactions under solvent-free conditions with the high reusability of four runs. The proposed protocol's main advantages are the originality of prepared [Gly-H][OTs], organic green synthesis under solvent-free conditions, high product yields, and less reaction times. [ABSTRACT FROM AUTHOR]

A novel caffeine-based acidic ionic liquid was synthesized, characterized, and utilized as an efficient and green catalyst for synthesizing DHPMs, xanthenediones, and acridinediones under solvent-free conditions. The prepared IL showed notable catalytic activity in organic reactions under solvent-free conditions with good reusability of four runs. The advantage of the present protocol is underlined by the originality of the prepared ionic liquid, absence of toxic solvents, high yields of products, and short reaction times. [ABSTRACT FROM AUTHOR]

We investigated a novel catalytic application of nickel-doped zinc oxide (Ni-ZnO) nanoparticles and zinc oxide (ZnO) nanoflakes at room temperature in an aqueous hydrotropic solution for the synthesis of biologically active dihydropyrimidones (DHPMs). Ni-ZnO is a stable, recyclable, green, efficient heterogeneous catalyst which shows maximum yield in a shorter reaction time than ZnO nanoflakes in very mild conditions of hydrotropic aqueous medium for DHPMs syntheses. [ABSTRACT FROM AUTHOR]