Category Archives: Year 2015 Issue 5

Synthesis of derivatives of hydroxy-2H-1-benzopyran-2one using microwave-assisted and conventional heating methods

Synthesis of derivatives of hydroxy-2H-1-benzopyran-2one using microwave-assisted and conventional heating methods CZARNA M., ORTYL J.

Please cite as: CHEMIK 2015, 69, 5, 297–306 As a result of the conducted experiments under microwave radiation and under conditions of conventional heating, a number of high-purity derivatives of hydroxy-2H-1-benzopyran-2-one were obtained. The conducted spectroscopic measurements and compound analysis showed that the majority of obtained products exhibit interesting spectroscopic properties, which allows their use as a molecular fluorescence probes. Keywords: hydroxycoumarin derivatives, coumarin,...
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Application of organic ionic liquids in polar [2+4] cycloaddition reactions

Application of organic ionic liquids in polar [2+4] cycloaddition reactions DRESLER E., JASIŃSKA E., ŁAPCZUK-KRYGIER A., NOWAKOWSKA-BOGDAN E., JASIŃSKI R.

Please cite as: CHEMIK 2015, 69, 5, 288–296 The paper presents the possibility of using organic ionic liquids as reaction media for polar [2+4] cycloaddition. Keywords: cycloaddition reaction [2+4], ionic liquids Read more in pdf pdf-icon...
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The photostability of poly (lactic acid) / polyacrylates composites as new materials for the packaging industry

The photostability of poly (lactic acid) / polyacrylates composites as new materials for the packaging industry VUKOVIĆ-KWIATKOWSKA I., KACZMAREK H.

Please cite as: CHEMIK 2015, 69, 5, 281–287 Composite films of poly (lactic acid) (PLA) with polyacrylates of varying composition and proportions of the components were obtained by photochemical reaction. The aim of the study was to investigate composites photostability in laboratory conditions using Suntest apparatus, equipped with Xenon lamp simulating sunlight. Increase of photostability composites containing cross-linked...
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Biocatalitic Transformation of epoxy- and vinylphosphonates

Biocatalitic Transformation of epoxy- and vinylphosphonates GÓRAK M., SERAFIN M., KLIMEK-OCHAB M., ŻYMAŃCZYK-DUDA E.

Please cite as: CHEMIK 2015, 69, 5, 273–280 The subject of research was the selective transformation of the two groups of organophosphorus compounds, epoxy- and vinylphosphonates, to the corresponding derivatives, using whole cells of bacteria or fungi. Hydrolytic activity towards model epoxphosphonate was observed only in the case of Aspergillus niger, whereas Cladosporium herbarum and Fusarium oxysporum were able to degrade stable C-P bond...
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