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Relevant academic research and scientific papers

Efficient iron catalyzed ligand-free access to acridines and acridinium ions

Acridines and acridinium ions are one of the important classes of compounds in terms of their usefulness in pharmaceuticals, materials, dyes and photo-catalysis. Here we present an unconventional FeCl3-alcohol catalysed one-pot method for their

Multicomponent and 1,3-dipolar cycloaddition synthesis of triazole- and isoxazole-acridinedione/xanthenedione heterocyclic hybrids: Cytotoxic effects on human cancer cells

A new series of diverse 1,2,3-triazole-acridinedione/xanthenedione and 1,2-isoxazole-acridinedione/xanthenedione heterocyclic hybrids have been synthesized via 1,3-dipolar coupling reaction of N/O-substituted-acridinedione-alkyne or O-substituted-xanthene

Betainium-based ionic liquids catalyzed multicomponent Hantzsch reactions for the efficient synthesis of acridinediones

In this study, a series of betainium-based ionic liquids with various anions have been synthesized and their catalytic performances for the Hantzsch reactions have been investigated. It is shown that these ionic liquids have high selectivity for the one-p

Fe3O4@SiO2-MoO3H nanoparticles: A magnetically recyclable nanocatalyst system for the synthesis of 1,8-dioxo-decahydroacridine derivatives

Molybdic acid-functionalized silica-coated nano-Fe3O4 particles (Fe3O4@SiO2-MoO3H) have been prepared as a novel heterogeneous acid catalyst using a facile process. The material was subsequ

Hollow Fe3O4@DA-SO3H: an efficient and reusable heterogeneous nano-magnetic acid catalyst for synthesis of dihydropyridine and dioxodecahydroacridine derivatives

Abstract: In this work, for the first time, a highly stable and efficient super-paramagnetic catalyst, H-Fe3O4@DA-SO3H, involving hollow morphology of Fe3O4 as core and dopamine as shell was prepared

Synthesis of 9-aryl-3,4,6,7,9,10-hexahydroacridine-1,8(2Н,5Н)-diones

The reaction in a mixture of 1,3-cyclohexanedione (dimedone), arylaldehyde, and ammonium acetate at 160°C during 10–15 min in the absence of solvent leads to the formation of 9-aryl-3,4,6,7,9,10-hexahydroacridine-1,8(2H,5H)-diones. The structure of the pr

Nano-zirconia as an excellent nano support for immobilization of sulfonic acid: A new, efficient and highly recyclable heterogeneous solid acid nanocatalyst for multicomponent reactions

Nano-zirconia-supported sulfonic acid [nano-ZrO2-SO3H (n-ZrSA)] is synthesized by immobilizing sulfonic acid groups on the surface of nano zirconium dioxide to produce a novel heterogeneous reusable solid acid nanocatalyst. This new nanocatalyst is characterized by FT-IR spectroscopy, thermogravimetric analysis (TGA), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), the Hammett acidity function and pH analysis. The introduced nano-zirconia-supported sulfonic acid is used as an efficient and recyclable catalyst for different heterocyclic multicomponent reactions such as the synthesis of hexahydroquinoline, 1,8-dioxo-decahydroacridine, polyhydroquinoline and 1,8-dioxo-octahydroxanthene derivatives. Optimization of the reaction conditions was studied using a central composite design (CCD) which is one of the most widely used response surface methodologies. The newly prepared heterogeneous solid acid nanocatalyst is easily separated and reusable for five cycles without any apparent loss of its catalytic activity, which confirmed the stability of the covalent bonding of the sulfonic acid groups. n-ZrSA has advantages such as its low cost, low toxicity, ease of preparation, good stability, high reusability and operational simplicity.

Alkaline earth metal catalyzed, one-pot, multi-component approach for the synthesis of dihydropyridine, acridine and xanthene derivatives in water

Ca(II) catalyzed one-pot multicomponent approach for the biologically important diverse heterocyclic compounds such as hexahydroxanthene diones, dihydropyridines and octahydroacridine diones has been described in water. Use of environmentally benign catal

Alkaline earth metal catalyzed, one-pot, multi-component approach for the synthesis of dihydropyridine, acridine and xanthene derivatives in water

Ca(II) catalyzed one-pot multicomponent approach for the biologically important diverse heterocyclic compounds such as hexahydroxanthene diones, dihydropyridines and octahydroacridine diones has been described in water. Use of environmentally benign catal

Water mediated reactions: TiO2 and ZnO nanoparticle catalyzed multi component domino reaction in the synthesis of tetrahydroacridinediones, acridindiones, xanthenones and xanthenes

Eco-accommodation of TiO2 nanorods in the four component Domino reaction for the framing of 9-(2-oxo-1,2-dihydroquinolin-3-yl)-10-phenyl-3,4,6,7-tetrahydroacridine-1,8-(2H,5H,9H,10H)-diones 4 from 1,3-cyclohexanedione and/or dimedone 1, 2-chloro-3-formylquinoline 2 and anilines 3 in water at 90 °C are accounted for. The present methodology offers a domino reaction strategy, high yield, simple operation, recyclability and is eco-friendly. In addition, a productive, highly chemoselective ZnO catalyzed, water mediated, microwave aided synthesis of functionalized xanthenes and xanthenones 7 and acridinediones 8 in excellent yields is reported through an environmentally benevolent strategy. This journal is