Výsledky vyhledávání - "Marcin Karelus"

Zwitterionic Compounds in the Synthesis of Water-Soluble 1,3-Oxathiolane Derivatives

Autor: Barbara Zaleska, Marcin Karelus, Hanna Kruszewska, Ewelina Zadora

Publikováno v: Synthesis. 2005:2946-2950

Perhydropyrimidin-2-ylium and perhydro-1,3-diazepin- 2 -ylium iodides with linked 1,3-oxathiolane ring were obtained. These new. water-soluble derivatives of 1,3-oxathiolane were prepared by cyclocondensation of diiodomethane with appropriate zwitter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51e5b0174e60cdf4f4610035cb35c8b8
https://doi.org/10.1055/s-2005-872168

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Synthesis of Heterocyclic Systems by the Reaction of Zwitterionic Compounds with Isocyanates and Thiophosgene

Autor: Barbara Zaleska, Marcin Karelus

Publikováno v: Synlett. 2002:1831-1834

The reaction of various isocyanates or thiophosgene with zwitterionic pyrimidinylium and 1,3-diazepinylium derivatives has led to the formation of unusually substituted [1,3]oxazolo[3,4-α]pyrimidines and novel heterocyclic system such as [1,3]oxazo-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b87f7b297a7b6307b178130efcc93a97
https://doi.org/10.1055/s-2002-34866

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Synthesis of novel twisted heterocyclic analogues of s-indacenes

Autor: Marcin Karelus, Tomasz Uchacz, Krzysztof Danel

Publikováno v: ARKIVOC, Vol 2011, Iss 9, Pp 272-280 (2011)

A series of novel compounds as candidates for OLED applications were synthesized by cyclization reactions of neighbouring rings in dipyrazolo[3,4-b:4',3'-e]pyridines 8-12. The desymmetrization of these molecules leading to 14 can be performed using b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d285138fd883cc18abb948ec0c0c01e4
https://ruj.uj.edu.pl/xmlui/handle/item/69349

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Some spirobiindane based 1H-pyrazolo [3,4-b] quinoline chromophore as novel chromophore for light-emitting diodes

Autor: Jacek Niziol, Andrzej Danel, I.V. Kityk, Jacob Chwast, G. Lakshminarayana, Ewa Gondek, Paweł Szlachcic, Tomasz Uchacz, P. Armatys, Marcin Karelus

An influence of phenoxy groups for the luminescent and electroluminescent properties of spiro-compounds with pyrazolo [3,4-b] quinoline structure (fluorophore) chromophore has been studied. All the compounds exhibit strong fluorescence in solution an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91244c34204e5dc0de8fa47e30c2407e
https://ruj.uj.edu.pl/xmlui/handle/item/72140

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The Synthesis of a New Fused Heterocyclic System: Hexahydro[1,5]oxathiocino[2,3-b]pyrazine

Autor: Paweł Serda, Barbara Zaleska, Marcin Karelus

Publikováno v: ChemInform. 38

A brief synthesis of the new heterocyclic system of 1,2,3,7,8,10a-hexahydro-6 H,10 H-[1,5]oxathiocino[2,3- b]pyrazin-10-imine was achieved, starting from piperazin-2-one derivatives and 1,3-dibromopropane.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2940424a5908aca7299531c127f9411
https://doi.org/10.1002/chin.200729042

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Perhydropyrimidinylium and 1,3-diazepinylium salts as potential ionic liquids

Autor: Marcin Karelus, Barbara Zaleska, Michał Flasiński, Paweł Serda

Publikováno v: ARKIVOC, Vol 2007, Iss 6, Pp 64-74 (2006)

Saturated or partially saturated heterocyclic compounds were uncovered as interesting and potential ionic liquid media. Zwitterionic compounds with perhydropyrimidinylium, 1,3- diazepinylium and quinazolinylium carbocations were utilized in the prepa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ceceec53b59e8ca46571cb1ba8aebf4e
https://ruj.uj.edu.pl/xmlui/handle/item/258538

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Synthesis of saturated imidazolidin[1,5-a]- and thiazolidin[3,4-a]perhydroquinoxalin-4-one and imidazolidin[1,5-a]piperazin-4-one derivatives : ring contraction of perhydroquinoxalin-4-one to perhydrobenzimidazolin-2-one

Autor: Jacek Grochowski, Robert Socha, Barbara Zaleska, Marcin Karelus, Paweł Serda

Saturated fused systems such as imidazolidin[ 1,5-a]- and thiazolidin[3,4-a]perhydroquinoxalin-4-one as well as imidazolidin[1,5-a]piperazin-4-one derivatives were prepared by cyclocondensation reactions of appropriate perhydroquinoxalin-3-one and pi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c1f0f14b4c24e09ad7387a34c02d9bc
https://ruj.uj.edu.pl/xmlui/handle/item/147589

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Synthesis of 1,4-diazines by ring expansion of 1,3-diazines

Autor: Marcin Karelus, Edward Szneler, Robert Socha, Paweł Serda, Barbara Zaleska, Jacek Grochowski

Fully saturated piperazin-3-one and quinoxalin-3-one derivatives were prepared by reactions of 2-anilino-2-ethoxy-3-oxothiobutanoic acid anilide with aliphatic 1,2-diamines. An unusual ring expansion of the intermediate 1,3-diazines leads to 1,4-diaz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::601792b45bd12f278a96ea112a6f62bf
https://ruj.uj.edu.pl/xmlui/handle/item/265046

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