Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Pavol Zahradník"'
Publikováno v:
Molecules, Vol 14, Iss 12, Pp 5382-5388 (2009)
Eleven new 2-styrylbenzothiazole-N-oxides have been prepared by aldol – type condensation reactions between 2-methylbenzothiazole–N-oxide and para-substituted benzaldehydes. Compounds with cyclic amino substituents showed typical push-pull molecu
Externí odkaz:
https://doaj.org/article/f7c5849805a34ccaa08ac1b2bef62008
Publikováno v:
ARKIVOC, Vol 2008, Iss 8, Pp 183-192 (2008)
Externí odkaz:
https://doaj.org/article/ed698ee019f040a1853ddb31ecb43373
Autor:
Pavol Zahradník, Eva Noskovicova, Dusan Velic, Dusan Lorenc, Peter Magdolen, Ivica Sigmundová
Publikováno v:
Chemical Physics Letters. 700:22-26
Two-photon absorption (TPA) cross sections of conjugated donor-π-acceptor dipolar structures containing benzothiazole or benzobisthiazolium moieties are determined in a broad spectral range from 700 nm to 1000 nm using two-photon induced fluorescenc
Autor:
Martin Uherek, Alexandra Čibová, Dusan Chorvat, Pavol Zahradník, Andrea Martinická, Marek Cigáň, Peter Magdolen
Publikováno v:
Dyes and Pigments. 149:597-611
Dicationic salts derived from linear and angular benzobisthiazole skeleton were prepared by methylation under microwave conditions. The following condensation with aromatic aldehydes afforded two-armed conjugated molecules, which represent quadrupola
Autor:
Veronika Novakova, Pavol Zahradník, Andrea Martinická, Mária Michálková Nečedová, Peter Magdolen
Publikováno v:
Dyes and Pigments. 141:448-456
A 3 B type unsymmetrical magnesium and zinc phthalocyanines with annelated thiazole ring connected to the triphenylamine moiety via ethylene bridge were designed and synthesized. Such tailored molecules showed the typical pattern for phthalocyanines
Autor:
Andrea Fülöpová, Pavol Zahradník, Peter Magdolen, Juraj Filo, Mária Michálková Nečedová, Marek Cigáň
Publikováno v:
Dyes and Pigments. 130:24-36
Five-membered thiazole-annelated subphthalocyanine derivatives have been prepared for the first time. Both regioisomers with C3 and C1 molecular symmetry have been isolated and optical resolution of C3 enantiomers was achieved. Heterocycle annelation
Autor:
Veronika Novakova, Marek Cigáň, Pavol Zahradník, Peter Magdolen, Andrea Fülöpová, Silvia Vlčková, Mária Michálková Nečedová
Publikováno v:
European Journal of Organic Chemistry. 2015:7053-7068
Phthalocyanines with annelated thiazole rings were synthesised by cyclotetramerisation of benzothiazoledicarbonitriles. Three types of these dicarbonitriles with ortho-configuration were prepared from disubstituted anilines and their cyclisation led
Autor:
Alexandra Čibová, Peter Magdolen, Marek Cigáň, Andrea Fülöpová, Jozef Kožíšek, Pavol Zahradník
Publikováno v:
Tetrahedron. 71:315-323
A series of eight conjugated donor-π-acceptor (D-π-A) molecules based on an angular benzobisthiazolium acceptor core was designed, synthesized and fully characterized. The physical and optical properties of the prepared compounds were tuned by vari
Publikováno v:
Journal of Heterocyclic Chemistry. 50:563-567
A six-step synthesis of the unsymmetrical trimethylbenzotristhiazole has been developed. Starting from 2-methylbenzothiazole following nitration, reduction, acetylation, thionation, and twofold cyclization, the desired trimethylbenzotristhiazole was
Autor:
Pavol Zahradník, Marek Cigáň, Andrea Fülöpová, Peter Magdolen, Ivica Sigmundová, Erik Rakovský
Publikováno v:
Journal of Molecular Structure. 1027:70-80
Methylation of unsymmetrical trimethylbenzotristhiazole with various reagents has been studied in details. The structure of obtained 2,3,5,8-tetramethylbisthiazolo[4,5-e;5,4-g]-1,3-benzothiazolium iodide has been proved by X-ray analysis in accord wi