Zobrazeno 1 - 10
of 461
pro vyhledávání: '"Dieter Naumann"'
Autor:
Martin Valldor, Axel Klein, Dieter Naumann, Alexander Krest, Patrick J. Eulgem, Dennis Rokitta, Harald Gerhards
Publikováno v:
Polyhedron. 100:271-281
Attempts to prepare fluorinated 5-aryl-1H-tetrazoles by various methods were successful for (3,5-bis(trifluoromethyl)phenyl)tetrazole (BTFTH) and in part for 5-pentafluoropenyltetrazole (F5PhTetH) and 5-(tetrafluoro-4-pyridinyl)tetrazole (F4PyTetH).
Autor:
Wieland Tyrra, Yurii L. Yagupolskii, Aleksej I. Mushta, Dieter Naumann, Mikhail M. Kremlev, Mathias Schäfer
Publikováno v:
Dalton Transactions. 44:19693-19699
The reactions of iodoperfluoroalkanes CnF2n+1I (n = 2, 3, 4) and n-BuLi at low temperatures give NMR spectroscopic evidence for LiCnF2n+1 which were converted into LiCu(CnF2n+1)2 derivatives upon treatment with 0.5 mol copper(i) bromide, CuBr. An alt
Publikováno v:
The Analyst. 142(8)
The morphology and structure of biological nanoparticles, such as viruses, can be efficiently analysed by transmission electron microscopy (TEM). To chemically characterise such nanoparticles in heterogeneous samples at the single particle level, we
Autor:
Harald Scherer, Natalia V. Kirij, Dieter Naumann, Ingo Pantenburg, Yurii L. Yagupolskii, Wieland Tyrra
Publikováno v:
Journal of Fluorine Chemistry. 147:22-30
Conditions for the addition of trialkyl(trifluorovinyl)silanes to the carbonyl- and thiocarbonyl function of commercially available isocyanates and isothiocyanates in the presence of tetramethylammonium fluoride (TMAF) to give corresponding amides of
Publikováno v:
Organometallics. 31:1559-1565
Se(C5F4N)2 and Te(C5F4N)2 were prepared via redox transmetalations of AgC5F4N and the corresponding elements in good yields. The crystal structures of both derivatives exhibit infinite chains caused by a weak intermolecular contact between the chalco
Autor:
Harald Scherer, Ingo Pantenburg, Dieter Naumann, Vanessa Treutlein, Johannes Hermle, Silke Kremer, Wieland Tyrra, Hendrik T. M. Fischer
Publikováno v:
Zeitschrift für anorganische und allgemeine Chemie. 638:580-588
MeTeRf (Rf = CF3, C2F5) can easily be prepared via the reactions of methyl iodide and the corresponding tetramethylammonium perfluoroalkyltellurates(0), [NMe4]TeRf (Rf = CF3, C2F5). Both compounds are easily oxidized by xenon difluoride and the heavi
Autor:
Yurii L. Yagupolskii, Dieter Naumann, Wieland Tyrra, Angela Möller, Mikhail M. Kremlev, Aleksej I. Mushta
Publikováno v:
Journal of Fluorine Chemistry. 133:67-71
An alternative copper halide-free route to obtain highly reactive trifluoromethylcopper species has been developed via the reaction of silver fluoride and trimethyl(trifluoromethyl)silane followed by a redox transmetallation with elemental copper. Th
Autor:
Barbara Uchanska-Ziegler, Andreas Ziegler, Heinz Fabian, Dieter Naumann, Hans Huser, Bernhard Loll
Publikováno v:
FEBS Journal. 278:1713-1727
Inflammatory processes are accompanied by the post-translational modification of certain arginine residues to yield citrulline, and a pH decrease in the affected tissue, which might influence the protonation of histidine residues within proteins. We
Autor:
Yurii L. Yagupolskii, Nataliya V. Kirij, Wieland Tyrra, Eduard B. Rusanov, Dieter Naumann, Silke Kremer
Publikováno v:
European Journal of Inorganic Chemistry. 2011:1961-1966
Hexacarbonyltungsten and -chromium [M(CO)6; M = W, Cr] react smoothly with perfluoroalkyl (Rf = CF3, C2F5) and trifluorovinyl (Rf = CF=CF2) silanes in the presence of equimolar amounts of fluoride ions with exclusive attack of one of the CO ligands t
Publikováno v:
Annals of Microbiology. 60:235-242
Although the addition of sugars to drying media is a general practice for the viability improvement of lactic acid starter cultures during drying, the mechanism behind the protective effects is not clear. To gain insight into the protective mechanism