Výsledky vyhledávání - "Anke Flemming"

Akademický článek

Synthesis and Molecular Structure of tert-Butyl 4-(2-tert-butoxy-2-oxoethyl)piperazine-1-carboxylate

Autor: Martin Köckerling, Anke Flemming, Constantin Mamat

Publikováno v: Crystals, Vol 2, Iss 1, Pp 90-95 (2012)

The crystal and molecular structure of tert-butyl 4-(2-tert-butoxy-2-oxoethyl)-piperazine-1-carboxylate is reported. The title compound crystallizes from a petroleum ether/ethyl acetate mixture in the monoclinic space group P 21/c with four molecules

Externí odkaz: https://doaj.org/article/f877b4ce8d7449bea1b0a96623a10616

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Akademický článek

Crystal structure of 2-(diphenylphosphanyl)phenyl 4-(hydroxymethyl)benzoate

Autor: Constantin Mamat, Anke Flemming, Martin Köckerling

Publikováno v: Acta Crystallographica Section E, Vol 70, Iss 12, Pp o1288-o1289 (2014)

The title compound, C26H21O3P, was obtained as by-product due to the hydrolysis of the desired tosylated compound. The dihedral angles between the three aromatic rings attached to the P atom lie in the range 78.1 (1)–87.6 (1)°. The hydroxymethyl g

Externí odkaz: https://doaj.org/article/fa7bbcea58b748f99e59ede461b32e60

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Akademický článek

(3R*,5′S*)-6,7-Dimethoxy-3-(4′-methoxy-6′-methyl-5′,6′,7′,8′-tetrahydro-1,3-dioxolo[4,5-g]isoquinolin-5′-yl)isobenzofuran-1(3H)-one (racemic α-noscapine)

Autor: Dieter Schinzer, Andreas Seidel-Morgenstern, Martin Köckerling, Arne Bernsdorf, Anke Flemming, Oliver Boehm, Jan von Langermann, Heike Lorenz

Publikováno v: Acta Crystallographica Section E, Vol 66, Iss 3, Pp o570-o570 (2010)

In the racemic title compound, C22H23NO7, the dihedral angle between the fused ring systems is 51.87 (6)°. Two of the methoxy groups are disordered over two orientations in 0.688 (5):0.312 (5) and 0.672 (15):0.328 (15) ratios. In the crystal, weak C

Externí odkaz: https://doaj.org/article/27d2b7b6714f490fa6cee4fb4d15242e

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New Hexanuclear Niobium Cluster Compounds with Pyridine andN-Methylpyrrolidone Ligands: [Nb6Cl12(Pyr)6][AlCl4]2and [Nb6Cl12(NMP)6][GaCl4]2

Autor: Anke Flemming, Jonas König, Martin Köckerling

Publikováno v: Zeitschrift für anorganische und allgemeine Chemie. 639:2527-2531

The study is focused on the preparation, characterization, and structure elucidation of two new molecular cluster complexes of niobium, one with an aromatic N donor ligand, the other one with an O-carboxamide ligand: [Nb6Cl12(Pyr)6][AlCl4]2 (1) (Pyr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35ff539eb7d1bfe286e3c5d5f6dab9bc
https://doi.org/10.1002/zaac.201300413

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Synthesis and Radiofluorination of Iodophenyl Esters as Tool for the Traceless Staudinger Ligation

Autor: Marc Pretze, Martin Köckerling, Constantin Mamat, Anke Flemming

Publikováno v: Zeitschrift für Naturforschung Section B-A Journal of Chemical Sciences 65(2010), 1128-1136

act as bioorthogonal conjugation partners in this ligation. To obtain such phosphanes, building blocks with good leaving groups for the introduction of radiofluorine or for the insertion of other labels and a coupling position for the azide moiety ar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::600ef7deea6882c6babb821e19561adf
https://doi.org/10.1515/znb-2010-0912

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Tetracyanidoborates with Sterically Demanding Phosphonium Cations - Thermally Resistant lonic Liquids

Autor: Martina Hoffmann, Martin Köckerling, Anke Flemming

Publikováno v: Zeitschrift für anorganische und allgemeine Chemie. 636:562-568

The reaction of K[B(CN)4] with [Ph4P]Cl, [nBu4P]Br, [nBuPh3P]Br, or [EtPh3P]Cl (Ph = phenyl, nBu = n-butyl, Et = ethyl) affords [Ph4P][B(CN)4] (1), [nBu4P][B(CN)4] (2), [EtPh3P][B(CN)4] (3), and [nBuPh3P][B(CN)4] (4) in high yields. The structures of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e11984ff792dcf005956be41263797c2
https://doi.org/10.1002/zaac.200900469

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Niobium Alcoholate Clusters with an Octahedral Arrangement of Metal Atoms: [K(CH3OH)4]2 [Nb6(OCH3)18] and [Na([18]crown-6)(C2H5OH)2]2 [Nb6(OC2H5)12(NCS)6]

Autor: Martin Köckerling, Anke Flemming

Publikováno v: Angewandte Chemie International Edition. 48:2605-2608

Complete exchange: [M(6)X(12)] type cluster compounds with an octahedral M(6) metal atom arrangement, which is completely surrounded by alcoholato ligands, were unknown until now. The first representatives are prepared containing a [Nb(6)(OR)(12)](4+

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::115f053dfa60647c47b5bb01f60a09ed
https://doi.org/10.1002/anie.200805166

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Niob-Alkoholat-Cluster mit oktaedrischem Metallatomgerüst: [K(CH3OH)4]2 [Nb6(OCH3)18] und [Na([18]Krone-6)(C2H5OH)2]2[Nb6(OC2H5)12(NCS)6]

Autor: Martin Köckerling, Anke Flemming

Publikováno v: Angewandte Chemie. 121:2643-2646

Kompletter Ligandenaustausch: Clusterverbindungen vom [M6X12]-Typ mit einem oktaedrischen M6-Metallatomgerust, das vollstandig von Alkoholatoliganden umgeben ist, waren bisher unbekannt. Hier werden die ersten Vertreter mit [Nb6(OR)12]4+-Einheit (R=C

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e924ac6d30cfea9d3927fce1d8d600b4
https://doi.org/10.1002/ange.200805166

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