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  • 1990-1994  (83)
  • 1970-1974  (24)
  • 1945-1949  (5)
  • 1915-1919  (12)
  • 1905-1909  (50)
  • Inorganic Chemistry  (174)
  • 11
    Electronic Resource
    Electronic Resource
    Diaminozucker, XII. Notiz über eine neue Synthese der 2.3-Diamino-2.3-didesoxy-D-galaktose (1970)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 995-996 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19701030343
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  • 12
    Electronic Resource
    Electronic Resource
    Eliminierungsreaktionen eines Pyranose-EnolacetatesVorläufige Mitteil.: Meyer zu Reckendorf, Naturwissenschaften 56, 328 (1969). Ein Pyranose-aminoredukton (1970)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 2418-2423 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Elimination Reactions of a Pyranose Enolacetate. A Pyranose Amino ReductoneThe α-azidoketone 1 is easily transformed either directly or via the enolacetate 2 into the vinylogous amide 4 which on acid treatment yields 8. 4 and 8 show the typical reactions of reductones. On reduction 8 yields derivatives of 2-amino-2-deoxy-D-allose only.
    Notes: Das α-Azido-keton 1 geht leicht direkt oder über das Enolacetat 2 in das vinyloge Säureamid 4 über, Aus dem mit Säure 8 entsteht. 4 und 8 zeigen die typischen Reaktionen von Reduktonen. Bei der Reduktion gibt 8 ausschließlich Derivate der 2-Amino-2-desoxy-D-allose.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19701030813
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  • 13
    Electronic Resource
    Electronic Resource
    Glykoside von Aminozuckern, III. Synthese von Strophanthidin-3-[3′-amino-3′-desoxy-β-D-glucopyranosid] (1971)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 104 (1971), S. 1-3 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Glycosides of Amino Sugars, III. Synthesis of Strophanthidin-3-(3′-amino-3′-deoxy-β-D-glucopyranoside)3-Amino-3-deoxy-1.2;5.6-di-O-isopropylidene-α-D-glucofuranose was transformed into the bromide 5 which in a Koenigs-Knorr reaction with strophanthidin yielded the β-glycoside.
    Notes: 3-Amino-3-desoxy-1.2:5.6-di-O-isopropyliden-α-D-glucofuranose wurde in das Bromid 5 übergeführt und dieses in einer Königs-Knorr-Reaktion mit Strophanthidim zum β-Glykosid umgesetzt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19711040102
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  • 14
    Electronic Resource
    Electronic Resource
    Di- und Polyaminozucker, XVI. Synthese der 2.3.4.6-Tetraamino-2.3.4.6-tetradesoxy-D-galaktose (1971)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 104 (1971), S. 1976-1980 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Di- and Polyamino Sugars, XVI. Synthesis of 2.3.4.6-Tetraamino-2.3.4.6-tetradeoxy-D-galactoseBenzyl 2-acetamido-2-deoxy-α-D-glucopyranoside was converted into the corresponding allo derivative which was trimesylated and reacted with sodium azide in phosphoric tris-(dimethylamide). After deblocking the free sugar was isolated as its crystalline tetrahydrochloride.
    Notes: Die Synthese der Titelverbindung erfolgte aus Benzyl-2-acetamino-2-desoxy-α-D-glucopyranosid über die entsprechende allo-Verbindung, in die nach Trimesylierung die Stickstoff-Funktionen mit Natriumazid in Hexamethylphosphorsäuretriamid eingeführt wurden. Nach Entfernung der Schutzgruppen wurde der Zucker als Tetrahydrochlorid kristallin isoliert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19711040638
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  • 15
    Electronic Resource
    Electronic Resource
    Zur Konstitutionsermittlung der Gentamycine - Struktur und Synthese des Gentosamins und Garosamins (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 2546-2557 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure Elucidation of the Gentamycins - Structure and Synthesis of Gentosamine and GarosamineBy methylation and degradation 3-deoxy-3-methylamino-D-xylose - identical with Gentosamine - was prepared from 3-amino-3-deoxy-D-glucose. Dehydrogenation to the 4-ketone and Grignard reaction yielded 3-deoxy-3-methylamino-4-C-methyl-L-arabinose and -D-xylose. The configuration of the L-arabino derivative - identical with Garosamine - was proved by i.r. spectroscopy and by cyclization to a 3.4-oxazolidone.
    Notes: Durch Methylierung und Kettenverkürzung wurde aus der 3-Amino-3-desoxy-D-glucose die 3-Desoxy-3-methylamino-D-xylose - identisch mit dem Gentosamin - dargestellt. Dehydrierung zum 4-Keton und Grignardierung ergaben die 3-Desoxy-3-methylamino-4-C-methyl-L-arabinose und -D-xylose. Die Konfiguration des L-arabino-Derivates - identisch mit dem Garosamin - wurde IR-spektroskopisch und durch Cyclisierung zum 3.4-Oxazolidon bewiesen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050816
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  • 16
    Electronic Resource
    Electronic Resource
    Glycoside von Aminozuckern, IV. Synthese von Disacchariden der 2-Amino-2-desoxy- und der 3-Amino-3-desoxy-D-glucose (1974)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 869-875 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Glycosides of Amino Sugars, IV. Synthesis of Disaccharides of 2-Amino-2-deoxy- and 3-Amino-3-deoxy-D-glucoseThe solvent dependency of the Koenigs-Knorr reaction between two derivatives of 2-amino-2-deoxy-D-glucose (3 and 4) was investigated. The highest yield of the α-disaccharide 5 was obtained in the system toluene/1,2-dimethoxyethane. The condensation of two derivatives of 3-amino-3-deoxy-D-glucose (11 and 13) under similar conditions yielded the 1,6-linked α-and β-disaccharides (15, 14) of this sugar which were unknown until now.
    Notes: Die Koenigs-Knorr-Reaktion zwischen zwei Derivaten der 2-Amino-2-desoxy-D-glucose (3 und 4) wurde in Abhängigkeit vom Lösungsmittel untersucht. Die höchste Ausbeute an α-Disaccharid 5 konnte in einem Gemisch von Toluol und 1,2-Dimethoxyäthan erhalten werden. Die Kondensation zweier Derivate der 3-Amino-3-desoxy-D-glucose (11 und 13) unter ähnlichen Bedingungen führte zu den bisher unbekannten 1,6-verknüpften α- und β-Disacchariden (15 bzw. 14) dieses Zuckers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19741070313
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  • 17
    Electronic Resource
    Electronic Resource
    1,3-Addition von Aziden an Azadecaboran: 6-Azadecaboran-4,9-diyltriazene (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 2025-2026 
    Details
    ISSN: 0009-2940
    Keywords: Aza-nido-decaborane(12) ; (1H-Triazen-1,3-diyl)-aza-arachno-decaborane(13) ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1,3-Addition of Azides to Azadecaborane: 6-Azadecaborane-4,9-diyltriazenesnido-NB9H12 (1) reacts with azides RN3 to form a coordinative B-N bond between B9 and N1 of RN3, accompanied by the α-addition of the B4-H bond of 1 to the N3 atom of RN3. The products 2a, b (R = H, CH2Ph, respectively) thus contain an azadecaborane skeleton and a five-membered unsaturated B2N3 ring with a common B-B edge. The product 2a crystallizes in the space group Pna21.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921250909
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  • 18
    Electronic Resource
    Electronic Resource
    Wanzlick-Carbene in der [4 + 1]-Cycloaddition mit Bis(methylthio)- und Bis(trifluormethyl)-1,2,4,5-tetrazin (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 1803-1806 
    Details
    ISSN: 0009-2940
    Keywords: Singlet carbenes ; [4 + 1] Cycloadditions ; 1,2,4,5-Tetrazines ; SEAr reactions, intramolecular ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Wanzlick Carbenes in the [4 + 1] Cycloaddition Reaction with Bis(methylthio)- and Bis(trifluoromethyl)-1,2,4,5-tetrazineThe 3,6-disubstituted 1,2,4,5-tetrazines 3 and 4 have been submitted to a [4 + 1] cycloaddition reaction with the nucleophilic singlet carbenes (Wanzlick carbenes) 2a-d, which are generated from the precursors 1a-d. With 3 as diazadiene the expected spiro compounds 6a-d are formed. In contrast to this presumed two-step reaction sequence of 3, with the tetrazine 4 the cascade cycloaddition/cycloelimination is surprisingly followed by an intramolecular electrophilic aromatic substitution to yield the chiral tetracyclic compounds of type 8 with high diastereoselectivity. The crystal structure of 8d has been determined by X-ray diffraction methods.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270933
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  • 19
    Electronic Resource
    Electronic Resource
    Spaltung sperriger Diarylditelluride mit Brom und Iod[1]; Strukturbestimmung an Et4N+ 2,4,6-(i-C3H7)3C6H2TeI-2 (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 761-766 
    Details
    ISSN: 0009-2940
    Keywords: Tellurium compounds ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Cleavage of Bulky Diaryl Ditellurides with Bromine and Iodine; Crystal Structure of Et4N+ 2,4,6-(i-C3H7)3C6H2TeI-2Bis(2,4,6-triisopropylphenyl) ditelluride (1a), obtained from 2,4,6-triisopropylphenylmagnesium bromide with tellurium followed by oxidation with oxygen, and bis(2,4,6-tri-tert-butylphenyl) ditelluride (1b) react with equimolar amounts of bromine and iodine to provide new monomeric arenetellurenyl halides 2,4,6-R3C6H2TeX (2a, b, 3a, b: R = i-C3H7, t-C4H9; X = Br, I). Both tellurenyl iodides are thermally more stable than the corresponding bromides. Green 2,4,6-(i-C3H7)3C6H2TeI (3a) reacts with Et4N+I- to give the stable, red adduct Et4N+ 2,4,6-(i-C3H7)3C6H2TeI-2 (4a). An X-ray crystal structure determination of 4a revealed a T-shaped structure of the hypervalent aryldiiodotellurate(II) anion. Iodide-ion transfer between aryldiiodotellurate(II) and arenetellurenyl iodide is a fast process (1H-NMR time scale). 125Te-NMR data of this anion and of tellurenyl halides are compared with those of the ditellurides and of lithium benzenetellurolates (LiTeR·(THF)x).
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921250402
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  • 20
    Electronic Resource
    Electronic Resource
    Face-Selective and endo-Selective Cycloadditions with Enantiomerically Pure Cyclopentadienes (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 2505-2509 
    Details
    ISSN: 0009-2940
    Keywords: Cyclopentadienes, bicyclic ; Face selectivity ; endo selectivity ; Chiral discrimination ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A general synthetic route to the enantiopure bicyclic cyclopentadienes (S)-3 and (R)-3 of the hydrindane series, starting from the Hajos-Wiechert ketone 4 or its enantiomer is described. Reasons for the excellent face and endo selectivity of cycloadditions and the resulting consequences for chiral recognition are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941271223
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