14-(4-Fluorophenyl)-14H-dibenzo[a,j]xanthene

Seethalakshmi, T.; Linden, Anthony; Kumar, Balbir; Hunnur, Raveendra K.; Kaliannan, P.

doi:10.1107/s1600536806045053

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…However, in molecule C the naphthyl units are highly folded compared with other two molecules. The similar observation has been reported for the structure of 14-(4-fluorophenyl)-14H-dibenzo[a,j]xanthene [13]. All the bond lengths and angles in DBX are found to be normal range [14].…”

Section: Moleculesupporting

confidence: 81%

Crystallography and computational electronic structure investigations on 14-(3, 4, 5-trimethoxyphenyl)-14H-dibenzo[a,j]xanthene

Anandhan

Boobalan²,

Venkatesan

et al. 2015

Journal of Molecular Structure

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Section: Moleculesupporting

confidence: 81%

Crystallography and computational electronic structure investigations on 14-(3, 4, 5-trimethoxyphenyl)-14H-dibenzo[a,j]xanthene

Anandhan

Boobalan²,

Venkatesan

et al. 2015

Journal of Molecular Structure

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“…The formation of product was characterized by IR, 1 H NMR, 13 C NMR, and mass-spectral studies; further structure of compound 3b was confirmed by X-ray diffraction studies [38]. …”

mentioning

confidence: 99%

Silica sulfuric acid: A simple, efficient, and reusable heterogeneous catalyst for the one-pot synthesis of aryl-14H-dibenzo[a,j]xanthenes under conventional heating and solvent-free conditions

Hunnur¹,

Sunilkumar²,

Kumar³

et al. 2008

Chem Heterocycl Comp

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A novel approach towards the one-pot synthesis of aryl-14H-dibenzo [a,j]xanthenes is described from a known reaction between substituted aldehydes and β-naphthol in the presence of heterogeneous catalyst silica sulfuric acid under conventional heating as well as solvent-free conditions to afford good to excellent yields. The catalyst is reusable; it can be used several times without any decrease in the product yield.Considerable interest has been focused on the synthesis of xanthenes; in particular, benzoxanthenes have attracted much attention in recent years because of their wide range of biological and pharmacological applications, such as antiviral [1], attention [2], and anti-inflammatory [3] properties. They also exhibited efficacy in photodynamic therapy [4,5] and are antagonists against the paralyzing action of zoxazolamine [6,7]. In addition, these compounds have also been employed as dyes [8,9], in laser technologies [10,11], and in fluorescent materials for visualization of biomolecules [12].The most commonly employed methods are available for the synthesis of xanthenes, and the synthesis of benzoxanthenes involves cycloacylation of carbamates [13], cyclodehydration [14][15][16][17][18], cyclocondensation between 2-hydroxy aldehydes and 2-tetralone [19], trapping of benzynes by phenols [20,21], intramolecular coupling reaction of benzaldehyde and acetophenones [22], aldehydes and β-naphthols by dehydration [15,[23][24][25], and β-naphthol with: i) formamide [26], ii) carbon monoxide [27], aldehyde acetals, and 2-naphthol-1-methanol [28]. Although some of these methods are useful, the majority of the above methods suffer from at least one of the following disadvantages: low yield, prolonged reaction time, use of toxic organic solvents, excess of reagents and catalysts, high cost, and susceptibility to moisture. There is still a need for an efficient economical and excellent yielding catalyst that can work under mild conditions and shorter reaction time and avoid the use of toxic reagents and solvents. __________________________________________________________________________________________

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3,11-Dibromo-14-(4-chlorophenyl)-14H-dibenzo[a,j]xanthene dimethylformamide monosolvate

Song¹,

Liu²

2012

Acta Cryst E

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In the title compound, C27H15Br2ClO·C3H7NO, the xanthene moiety has a flattened boat conformation with a folding angle between the naphthalene units of 9.46 (3)°. The mean planes of the xanthene system and its 4-chlorophenyl substituent are nearly perpendicular [dihedral angle = 89.43 (5)°]. The dimethylformamide solvent molecule is disordered over two sets of sites with an occupancy ratio of 0.520 (11):0.480 (11).

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14-(4-Fluorophenyl)-14H-dibenzo[a,j]xanthene

Abstract: Key indicatorsSingle-crystal X-ray study T = 160 K Mean (C-C) = 0.003 Å R factor = 0.045 wR factor = 0.099 Data-to-parameter ratio = 8.5For details of how these key indicators were automatically derived from the article, see

Cited by 3 publications

References 9 publications

Crystallography and computational electronic structure investigations on 14-(3, 4, 5-trimethoxyphenyl)-14H-dibenzo[a,j]xanthene

Crystallography and computational electronic structure investigations on 14-(3, 4, 5-trimethoxyphenyl)-14H-dibenzo[a,j]xanthene

Silica sulfuric acid: A simple, efficient, and reusable heterogeneous catalyst for the one-pot synthesis of aryl-14H-dibenzo[a,j]xanthenes under conventional heating and solvent-free conditions

3,11-Dibromo-14-(4-chlorophenyl)-14H-dibenzo[a,j]xanthene dimethylformamide monosolvate

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