A comparative study of TiO2, Al2O3, and Fe3O4 nanoparticles as reusable heterogeneous catalysts in the synthesis of tetrahydrobenzo[a]xanthene-11-ones

Davoodnia, Abolghasem; Yadegarian, Sepideh; Nakhaei, Ahmad; Tavakoli‐Hoseini, Niloofar

doi:10.1134/s1070363216120495

Cited by 11 publications

(2 citation statements)

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“…They are also known as laser dyes . Among xanthene based compounds, tetrahydrobenzo[ a ]xanthene‐11‐ones are generally synthesized by one‐pot, three‐component reaction of β ‐naphthol, aldehydes, and dimedone in the presence of a variety of catalysts . Nevertheless, development of new efficient recyclable catalysts for the synthesis of these compounds was of certain demand.…”

Section: Introductionmentioning

confidence: 99%

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Phosphomolybdic acid supported on Schiff base functionalized graphene oxide nanosheets: Preparation, characterization, and first catalytic application in the multi‐component synthesis of tetrahydrobenzo[a]xanthene‐11‐ones

Rohaniyan

Davoodnia

Beyramabadi

et al. 2019

Applied Organom Chemis

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New Schiff base (SB) functionalized graphene oxide (GO) nanosheets containing phosphomolybdic counter‐anion H2PMo12O40¯ (H2PMo) were successfully prepared by grafting of 3‐aminopropyltriethoxysilane (APTS) on GO nanosheets followed by condensation with benzil and finally reaction with phosphomolybdic acid (H3PMo12O40, denoted as H3PMo) and characterized using Fourier transform infrared (FT‐IR) spectroscopy, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), particle size distribution, energy‐dispersive X‐ray (EDX) analysis, EDX elemental mapping, and inductively coupled plasma optical emission spectrometry (ICP‐OES). The prepared new nanomaterial, denoted as GO‐SB‐H2PMo, was shown to be an efficient heterogeneous catalyst in one‐pot, three‐component reaction of β‐naphthol, aldehydes, and dimedone, giving high yields of tetrahydrobenzo[a]xanthene‐11‐ones within short reaction times. The catalyst is readily recovered by simple filtration and can be recycled and reused several times with no significant loss of catalytic activity.

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Section: Introductionmentioning

confidence: 99%

“…---110 ---8-30 80-97 [45] Poly(N,N′-dibromo-N-ethylnaphtyl-2,7-sulfonamide) 5 ---110 ---30-120 70-96 [46] Sulfonation of carbonized xylan-type hemicellulose 4.3 ---90 ---120 80-96 [47] N,N′-dibromo-N,N′-1,2-ethanediyl bis(p-toluenesulfonamide)…”

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confidence: 99%