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Photopolymerization of trimethylolpropane triacrylate induced by diselenide derivatives

Jędrzejewska B., Rafiński Z., Pączkowski J.

Polimery

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2009

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T. 54, nr 6

417-420

EN

Six diselenides have been evaluated as novel photoinitiators for free radical polymerization induced with an argon-ion laser irradiation. Our studies show that the rate of photopolymerization depends on the structure and concentration of the photoinitiators. The relation between the rate of polymerization and the light intensity shows a linear dependence.

PL

Jako nowe fotoinicjatory polimeryzacji rodnikowej działające w zakresie światła UV zastosowano sześć organicznych diselenków. Scharakteryzowano ich podstawowe właściwości spektroskopowe. W badaniach fotopolimeryzacji triakrylanu trimetylolopropanu (TMPTA) inicjowanej diselenkami określono zależności szybkości tego procesu od budowy i stężenia inicjatora. Wykazano występowanie liniowej zależności szybkości badanej polimeryzacji od natężenia promieniowania emitowanego przez laser argonowo-jonowy.

2

Synthesis of New Diaryl and Dialkyl Diselenides as Potential Vircucides and Antimicrobials

Palus J., Chojnacka M., Piasecki E., Zboińska E., Młochowski J.

Polish Journal of Chemistry

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2004

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Vol.78 /nr 11-12

2117-2126

EN

The synthesis of three new groups of alkyl and aryl diselenides: 2,2'-diselenobisbenzamides, 4,4'-diselenobisbutyramides and 2,2'-di(selenomethyl)bisbenzamides designed as potential virucides and bacteriocides was elaborated. It was based on acylation of free amino group in monoprotected diamines or 4'-aminobenzo-15-crown-5 with corresponding diselenobiscarboxylic acids or their chlorides.

3

Hydrogen Peroxide Oxidation of Naphthalene Derivatives Catalyzed by Poly(bis-1,2-diphenylene) Diselenide

Giurg M., Syper L., Młochowski J.

Polish Journal of Chemistry

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2004

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Vol. 78 / nr 2

231--248

EN

Oxidation of 1- and 2-substituted naphthalenes (1) with 30% hydrogen peroxide in the presence of poly(bis-1,2-diphenylene) diselenide (PPDS) has been investigated. Depending on the substrate used trans-2-carboxycinnamic acid (2), and its isomer, (1-oxo-1,3-dihydroisobenzofuran-1-yl)acetic acid (3) or 2-naphthoic acid (4b) was a major product. Oxidation of hydroxynaphthalenes 1b and 1c is a convenient way to obtain trans-2-carboxy cinnamic acid (2) in almost quantitative yield. The mechanism of the reaction is postulated.

4

Hydrogen Peroxide Oxidation of N,N-Dimethylhydrazones Promoted by Selenium compounds, Titanosilicalites or Acetonitrile

Giurg M., Młochowski J., Ambrożak A.

Polish Journal of Chemistry

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2002

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Vol. 76 / nr 12

1713-1720

EN

Hydrogen peroxide oxidation of N,N-dimethylhydrazones 1 promoted by title reagents has been investigated. Depending on the substrate nitrile 2 and/or amide 3 accompanied with carboxylic acid 4 and parent carbonyl compounds 5 were obtained. Formation of nitriles 2 with H2O2-acetonitrile system is limited for a few more active substrates. The mechanism of the reaction, based on generated in situ peroxyiminoacetic acid, is presented. A broad spectrum of aliphatic, unsaturated and aromatic nitriles 2 was obtained by oxidation of corresponding N,N-dimethylhydrazones 1 with hydrogen peroxide in the presence of poly(bis-9,10-anthracenyl) diselenide (PADS) (7) as catalyst.

5

Bisbenzisoselenazol-3(2H)-ones, a New Group of Ebselen Analogues

Osajda M., Kloc K., Młochowski J., Piasecki E., Rybka K.

Polish Journal of Chemistry

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2001

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Vol. 75, nr 6

823-830

EN

The title compounds with benzisoselenazolone moieties connected by spacers such as phenylene, bisphenylene, alkylene, oxaalkylene, azaalkylene and dithiaalkylene groups have been obtained in the reaction of 2-(chloroseleno)benzoyl chloride with compounds having two primary amine groups, while the secondary amines gave products of their selenenylation and/or acylation. Bisbenzisoselenazol-3(2H)-ones were found, in the antiviral assay in vitro, to be inhibitors of cytopathic activity of RNA and DNA viruses: EMCV, HSV-1 and VSV.