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Rtishchev, N. I.; Носова, Г. И.; Solovskaya, N. A.; Luk'yashina, V. A.; Galaktionova, E. F.; Kudryavtsev, V. V.

doi:10.1023/a:1013237415295

Cited by 9 publications

(2 citation statements)

References 3 publications

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“…However, it hardly be said about the properties of chalcone and its amino-derivatives. Due to the flexible -CQC-C(-)QO chain and non-planar structure [8,9] they have distinguishing features, such as fluorescence quenching in protic solvents [4,[10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Both electron-donor and electron-acceptor (except highly polar CF 3 and Cl) substituents cause a decrease in the energy of the S state − ππ ⁎ . The largest shift (0.8 eV) corresponds to the 4-(N, N dimethylamino ′ − )-chalcone, which is shown to have also high fluorescence quantum yield (0.6 in dimethylformamide) when compared to the non-fluorescent chalcone [12,14]. In paper [8] the energies of singlet and triplet ππ ⁎ and nπ ⁎ excited states were simulated using quantum chemical approach for 4-(N, N dimethylamino ′ − )-chalcone and its complex with water molecules in a gas phase.…”

Section: Introductionmentioning

confidence: 99%

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Luminescent properties of chalcone and its aminoderivatives

Komarova

Sakipov

Plotnikov

et al. 2015

Journal of Luminescence

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Luminescent properties of chalcone and its aminoderivatives

Komarova

Sakipov

Plotnikov

et al. 2015

Journal of Luminescence

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Photodimerization of heteroaryl chalcones: comparative antimicrobial activities of chalcones and their photoproducts

Nagwanshi¹,

Bakhru

Jain

2011

Med Chem Res

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The heterocyclic analogues of chalcones were synthesized by Claisen Schmidt reaction of (a) benzaldehyde with 2-acetylfurane, 2-acetylpyrrole and 2-acetylthiophene and (b) acetophenone with furfural, thiophene-2-carbaldehyde and pyrrole-2-carbaldehyde. The photolysis of class (a) and (b) chalcones under UV lamp gave different products. The stereoselective photodimerization of 1-(furane-2-yl)-3-phenylprop-2-en-1-one (1), 3-phenyl-1-(1H-pyrrole-2-yl)-prop-2-en-1-one (2) gave b-truxinic type dimers, (3,4-diphenylcyclobutane-1,2-diyl)bis (furane-2-yl methanone) (7), (3,4-diphenylcyclobutane-1,2-diyl)bis ((1H-pyrrol-2-yl) methanone) (8) by syn head-to-head coupling whereas 3-phenyl-1-(thiophen-2-yl)-prop-2-en-1-one (3) gave d-truxinic type dimers, (3,4-diphenylcyclobutane-1,2-diyl)bis (thiophen-2-yl methanone) (9) by anti head-to-head coupling. The photolytic products of 3-(furane-2-yl)-1-phenylprop-2-en-1-one (4), 1-phenyl-3-(thiophen-2-yl)-prop-2-en-1-one (5) and 1-phenyl-3-(1H-pyrrole-2-yl)-prop-2-en-1-one (6) were identified as corresponding 1,6-di(furane-2-yl)-3,4-diphenylhexa-1,5-diene-3,4-diol (10), 3,4-diphenyl-1,6-di(thiophen-2-yl)hexa-1,5-diene-3,4-diol (11) and 3,4-diphenyl-1,6-di (1H-pyrrol-2-yl)hexa-1,5-diene-3,4-diol (12) pinacol dimers.The antibacterial and antifungal activity of the precursor chalcones and the dimeric products showed antimicrobial activities of different extents with respect to individual compounds. In general, photolysis of heteroaryl chalcones causes the depletion of antimicrobial activity.

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