Category Archives: Year 2014 Issue 7

Biological activity and synthesis of sulfonamide derivatives: a brief review

Biological activity and synthesis of sulfonamide derivatives: a brief review
KOŁACZEK A., FUSIARZ I., ŁAWECKA J., BRANOWSKA D.

Please cite as: CHEMIK 2014, 68, 6, 620–628

Sulfonamides (SO2-NH-) have been the center of the drug structures as they are quite stable and well tolerated in human beings. The sulfonamides are very important protected intermediates of amines with several types of biological activities. Activity of the sulfonamides is due to different functional groups present...

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Analysis of smectite content in certain raw clay minerals based on sorption-spectrophotometric studies

Analysis of smectite content in certain raw clay minerals based on sorption-spectrophotometric studies
PANNA W., PROSOWICZ G., WYSZOMIRSKI P.

Please cite as: CHEMIK 2014, 68, 6, 612–619

The object of the study is the analysis of smectite content in selected Krakowiec clays that are basic materials for construction ceramics industry in south-eastern Poland. The studies were carried out mainly by means of sorption-spectrophotometric methods with copper (II) triethylenetetramine (TETA Cu(II)) and methylene blue....

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Mathematical optimization of the process of allyl alcohol epoxidation in the presence of methanol over Ti-SBA-15 catalyst

Mathematical optimization of the process of allyl alcohol epoxidation in the presence of methanol over Ti-SBA-15 catalyst
WRÓBLEWSKA A., MAKUCH E.

Please cite as: CHEMIK 2014, 68, 6, 600–611

The process of allyl alcohol epoxidation in the presence of methanol over Ti-SBA-15 catalyst was optimized using rotatableuniform design. For main functions describing the process (allyl alcohol conversion, selectivity of conversion to glycidol in relation to consumed allyl alcohol and selectivity of conversion to...

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Direct synthesis of organic azides and thiols derived from ethylene glycol via modified Appel reaction

Direct synthesis of organic azides and thiols derived from ethylene glycol via modified Appel reaction
STEFANIAK M., JASIŃSKI M., URBANIAK K., SELIGER P., GUTOWSKA N., ROMAŃSKI J.

Please cite as: CHEMIK 2014, 68, 6, 592–599

Classical method of conversion of primary alcohols into corresponding alkyl halides by usage of triphenylphosphine and tetrahalogenated methane, so-called Appel reaction, was adopted for the direct synthesis of terminal organic thiols and azides derived from ethylene glycol and...

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Tocopherols and tocotrienols as vitamin E

Tocopherols and tocotrienols as vitamin E
ZIELIŃSKA A., NOWAK I.

Please cite as: CHEMIK 2014, 68, 7, 585–591

The term vitamin E denotes a group of organic chemical compounds exhibiting similar physiological activity. There are eight naturally occurring homologues including α-, β-, γ-, δ-tocopherols and their counterparts in the forms of α-, β-, γ-, δ-tocotrienols. A common characteristics of all these compounds is the presence of a 6-chromanol ring and an isoprenoid side...

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