Novel environmentally benign procedure for the synthesis of 2-aryl- and 2-hetaryl-4(3H)-quinazolinones / Todor Deligeorgiev in COLORATION TECHNOLOGY, Vol. 126, N° 1 (2010)  

[article]  inCOLORATION TECHNOLOGY > Vol. 126, N° 1 (2010) . - p. 24-30 Titre : Novel environmentally benign procedure for the synthesis of 2-aryl- and 2-hetaryl-4(3H)-quinazolinones Type de document : texte imprimé Auteurs : Todor Deligeorgiev, Auteur ; Ana M. Cuadro, Auteur ; Julio Alvarez-Buila, Auteur ; Juan J. Vaquero, Auteur ; Aleksey Vasilev, Auteur ; Stefka Kaloyanova, Auteur Année de publication : 2010 Article en page(s) : p. 24-30 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : A novel environmentally benign procedure for the synthesis of 2-aryl- or 2-hetaryl-4(3H)-quinazolinones by condensation of anthranilamide with various aromatic aldehydes in polyethylene glycol under microwave irradiation has been developed. In contrast with other reported methods, this procedure provides the corresponding quinazolinones with good to high yields and purity, in very short reaction times and without the use of an oxidant. DOI : 10.1111/j.1478-4408.2010.00223.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2010.00223.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8414 [article]

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A novel general method for fast and easy preparation of cationic, neutral dimethinehemicyanine and dimethine dyes by uncatalysed Knoevenagel condensation / Todor Deligeorgiev in COLORATION TECHNOLOGY, Vol. 128, N° 6 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 6 (2012) . - p. 417-424 Titre : A novel general method for fast and easy preparation of cationic, neutral dimethinehemicyanine and dimethine dyes by uncatalysed Knoevenagel condensation Type de document : texte imprimé Auteurs : Todor Deligeorgiev, Auteur ; Nikolay Gadjev, Auteur ; Stefka Kaloyanova, Auteur ; Nedyalko Lesev, Auteur ; Aleksey Vasilev, Auteur ; Alexi Alexiev, Auteur Année de publication : 2012 Article en page(s) : p. 417-424 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption Colorants -- Synthèse Colorants cationiques Fluorescence Index. décimale : 667.3 Teinture et impression des tissus Résumé : Three novel general experimental procedures for preparation of cationic, neutral dimethinehemicyanine and dimethine dyes (eight of which are unpublished) by uncatalysed Knoevenagel condensation have been developed. The proposed methods are versatile as a variety of different starting materials can be used and they ensure good to very high yields, very short reaction times and high purity of the final dyes. Absorption and fluorescent properties of the novel dyes were investigated. DOI : 10.1111/j.1478-4408.2012.00408.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2012.00408.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16442 [article]

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Styryl dyes - synthesis and applications during the last 15 years / Todor Deligeorgiev in COLORATION TECHNOLOGY, Vol. 126, N° 2 (2010)

[article]  inCOLORATION TECHNOLOGY > Vol. 126, N° 2 (2010) . - p. 55-80 Titre : Styryl dyes - synthesis and applications during the last 15 years Type de document : texte imprimé Auteurs : Todor Deligeorgiev, Auteur ; Aleksey Vasilev, Auteur ; Stefka Kaloyanova, Auteur ; Juan J. Vaquero, Auteur Année de publication : 2010 Article en page(s) : p. 55-80 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : One of the most widely used and important groups of functional dyes are the styryl dyes and a review of this functional dye class has not been published for more than 15 years. In this review article, we describe the new trends in the synthesis of a range of novel intermediates and styryl dyes and include the most interesting examples of their high-tech applications. However, this review is not intended to be comprehensive because of the large number of styryl dye studies that have been carried out in this time. Styryl cyanine dyes are widely used in optical recording media in laser discs, as flexible dyes, laser dyes, as optical sensitisers and in various other fields, for example dye-sensitised solar cells and dyes with non-linear optical properties. Additionally, the most important applications for these dyes are in bio-labelling and in medicinal analysis. DOI : 10.1111/j.1478-4408.2010.00235.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9278 [article]

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Synthesis and electronic spectra of 3-hetaryl substituted coumarin derivatives 7-hydroxy-2H-chromen-2-on and 9-hydroxy-2H-benzo(f)chromen-2-on / Todor Deligeorgiev in COLORATION TECHNOLOGY, Vol. 124, N° 4 (2008)  

[article]  inCOLORATION TECHNOLOGY > Vol. 124, N° 4 (2008) . - p. 195-203 Titre : Synthesis and electronic spectra of 3-hetaryl substituted coumarin derivatives 7-hydroxy-2H-chromen-2-on and 9-hydroxy-2H-benzo(f)chromen-2-on Type de document : texte imprimé Auteurs : Todor Deligeorgiev, Auteur ; Teodora Tsvetkova, Auteur ; Diana Ivanova, Auteur ; Iliana Timtcheva, Auteur Année de publication : 2009 Article en page(s) : p. 195-203 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : The synthesis of 3-hetaryl substituted coumarin derivatives [7-hydroxy-2H-chromen-2-on and 9-hydroxy-2H-benzo(f)chromen-2-on] containing a hydroxyl group by reacting 2,4-dihydroxybenzaldehyde and 2,4-dihydroxynaphtaldehydes with 2-cyanomethylbenzothiazole, 2-cyanomethylbenzimidazole, 1-methyl-2-cyanomethylbenzimidazole and 2-cyanomethyl-4-phenylthiazole is presented. The absorption and steady-state fluorescence characteristics of the synthesised 3-hetaryl substituted 7-hydroxy-2H-chromen-2-on and 9-hydroxy-2H-benzo(f)chromen-2-on in a solution of ethanol and at different pH values are studied to assess their possible application as fluorescent probes for use in molecular biology and medicine. DOI : 10.1111/j.1478-4408.2008.00141.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2008.00141.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3164 [article]

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Synthesis of novel 3-hetaryl-substituted 6- and 8-hydroxybenzo[f]coumarin derivatives / Todor Deligeorgiev in COLORATION TECHNOLOGY, Vol. 126, N° 4 (2010)  

[article]  inCOLORATION TECHNOLOGY > Vol. 126, N° 4 (2010) . - p. 209-214 Titre : Synthesis of novel 3-hetaryl-substituted 6- and 8-hydroxybenzo[f]coumarin derivatives Type de document : texte imprimé Auteurs : Todor Deligeorgiev, Auteur ; Teodora Tsvetkova, Auteur ; Stefka Kaloyanova, Auteur ; Diana Ivanova, Auteur ; Iliana Timtcheva, Auteur Année de publication : 2010 Article en page(s) : p. 209-214 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.3 Teinture et impression des tissus Résumé : Eight novel 3-hetaryl-substituted 6- and 8-hydroxybenzo[f]iminocoumarin compounds were synthesised by the reaction of 2,5-dihydroxynaphthaldehydes or 2,7-dihydroxynaphthaldehydes with 2-cyanomethylbenzo-thiazole, 2-cyanomethylbenzoimidazole, 1-methyl-2-cyanomethylbenzoimidazole and 2-cyanomethyl-4-phenylthiazole. The iminocompounds obtained were hydrolysed with hydrochloric acid to the benzo[f]coumarins. Becaue of the high reactivity of the iminocoumarins, only mixtures which also contained the corresponding coumarin compounds were isolated. The absorption and steady-state fluorescence characteristics of the benzo[f]coumarins (benzo[f]chromen-2-ones) synthesised were studied in ethanol and in toluene. Note de contenu : EXPERIMENTAL : Synthesis of 3-hetarylbenzo[f]iminocoumarin compounds - Synthesis of 3-hetarylbenzo[f]coumarin. RESULTS AND DISCUSSION : Synthetic procedure of 3-hetaryl-6- and 8-hydroxybenzo[f]coumarins - Absorption and fluorescent properties of 3-hetaryl-6- and _-hydroxybenzo[f]coumarins. DOI : 10.1111/j.1478-4408.2010.00249.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2010.00249.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9873 [article]

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Synthesis of novel tetracationic asymmetric monomeric monomethine cyanine dyes – highly fluorescent dsDNA probes / Aleksey Vasilev in COLORATION TECHNOLOGY, Vol. 127, N° 1 (2011)  

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Synthesis of novel water-soluble fluorescent coumarins bearing sulphonic and hydroxyl groups / Todor Deligeorgiev in COLORATION TECHNOLOGY, Vol. 127, N° 6 (2011)

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