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NaY zeolite: A useful catalyst for nitrile hydrolysis
(Molecular Diversity Preservation International, Basel, 2000)
The NaY zeolite catalysed hydrolysis of nitriles to primary amides is reported. It is found that aryl nitriles with strong electron-withdrawing substituents and cyanopyridines are readily hydrolysed in the water suspension, ...
A new heterocyclization product of adhyperforin from Hypericum perforatum (St. John's Wort)
(Molecular Diversity Preservation International, 2000)
Microbiological transformation of a synthetic benzofurane type lactone / Mikrobiološka transformacija sintetičkog laktona benzofuranskog tipa
(Belgrade : Serbian Chemical Society, 2000)
The aim of this work was the investigation of the biotransformation ability of a
synthetic benzofurane type g-lactone. This workwas basedon the microbiological reactions
of Aspergillus niger, Saccharomyces cerevisiae, ...
Activity of some disiloxanes toward the cation exchange resin-catalyst in the siloxane equilibration reaction / Aктивност дисилоксана према катјонској јоноимењивачкој смоли - катализатору реакције силоксанске еквилибрације
(Belgrade : Serbian Chemical Society, 2000)
The relative activities of four disiloxanes toward the cation exchange resin, which was used as an equilibration catalyst, were determined in such a way that the equilibrium initialy present in an arbitrary chosen equilibrate ...
The synthesis of some unsaturated 4-substituted-g-lactones / Sinteza nekih nezasićenih 4-substituisanih-g-laktona
(Belgrade : Serbian Chemical Society, 2000)
The synthesis of conjugated and nonconjugated unsaturated 4-substituted lactones
of type 1 and 2 are described. The type 1 lactone was prepared by a two step
procedure employing Bredereck s reagent. The type 2 lactone ...
The crystal structure of 14-oxo-13,14-seco-5α-cholest-13(18)-en-3β-yl acetate and the assignment of the configuration of its acetoxy derivatives / Kristalna struktura 14-okso-13,14-seko-5α-holest-13(18)-en-3β-il-acetata i određivanje konfiguracije njegovih acetoksi derivata
(Serbian Chemical Society, 2000)
The crystal structure of 14-oxo-13,14-seco-5α-cholest-13(18)-en-3β-yl acetate (2), obtained (in addition to the (E)-Δ12-isomer 3) by oxidative fragmentation of the C(13)-C(14) bond of 14α-hydroxy-5α-cholestan-3β-yl acetate ...
Determination and structural correlation of the pKa values of p-substituted trans-2,3-epoxy-4-oxo-4-phenylbutanoic acids / Određivanje pKa vrednosti i korelacija sa strukturom p-supstituisanih trans-2,3-epoksi-4-okso-4-fenilbutanskih kiselina
(Srpsko hemijsko društvo, Beograd, 2000)
The pKa values for a series of eight p-substituted trans-2,3-epoxy-4-phenyl butanoic acids (p-substituted trans-β-aroylepoxyacrylic acids) have been determined potentiometrically in aqueous media at 25 °C at an ionic ...
Lead tetraacetate oxidation of the Diels-Alder adduct of 7-dehydrocholestryl acetate with maleic anhydride / Olovotetraacetatna oksidacija Dils-Adlerovog adukta 7-dehidro-holesteril-acetata sa anhidridom maleinske kiseline
(Belgrade : Serbian Chemical Society, 2000)
The Diels-Alder adduct (3), obtained by cycloaddition of 7-dehydrocholesteryl
acetate (1) and maleic anhydride (2), was heated at ca. 90 oC with a large excess of lead
tetraacetate in pyridine solution for 5 h. Under ...
Odredivanje glikozilovanih proteina seruma: poredenje metoda sa tiobarbiturnom kiselinom i fenol-sumpornom kiselinom / Determination of serum glycosylated proteins: Comparison of thiobarbituric acid and phenol-sulphuric acid assays
(Društvo medicinskih biohemičara Srbije i Crne Gore i Farmaceutski fakultet, Beograd, 2000)
Određivanje sadržaja glikozilovanih proteina je važno za otkrivanje i kontrolu stanja dugotrajne hiperglikemijc u dijabetesu. Cl ovom radu određivan je sadržaj glukoze vezane za proteine seruma kod obolelih od dijabetesa, ...
Drying of suspension and pastes in fluidized bed of inert particles / Sušenje suspenzija i pasta u fluidizovanom sloju inertnog materijala
(Serbian Chemical Society, 2000)
A fluid bed dryer with inert particles was used for the drying of suspensions and pastes. The effects of the operating conditions on the dryer throughput and on the product quality were investigated. Experiments were ...