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  • 1995-1999  (47)
  • 1960-1964  (23)
  • Inorganic Chemistry  (69)
  • Carbon tetrachloride
  • 11
    Electronic Resource
    Electronic Resource
    Polycyclische Verbindungen, IX. 20-Methyl-cholanthren und Cholanthren (1962)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 95 (1962), S. 213-221 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird über eine Abwandlung der 20-Methyl-cholanthren-Synthese von Buchta und Güllich2 berichtet. An das dort beschriebene 8-Methyl-3-[β-brom-äthyl]-acenaphthen, das eine Struktur besitzt, wie sie im Teilbezirk C, D, E des 20-Methyl-cholanthrens vorliegt, werden die beiden fehlenden Ringe in der Reihenfolge B, A angegliedert. In analoger Weise wird das 3-[β-Brom-äthyl]-acenaphthen  -  dargestellt aus Naphthalin-dicarbonsäure-(1.2)-anhydrid in einer 8 stufigen Reaktionsfolge  -  in Cholanthren übergeführt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19620950134
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  • 12
    Electronic Resource
    Electronic Resource
    Derivate des 3.6-Anhydro-D-glucosamins (1962)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 95 (1962), S. 996-999 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Ringschluß des 3-Mesyl-2-benzamino-2-desoxy-methyl-β-D-glucopyrano-sids (III) wurde das 2-Benzamino-2-desoxy-3.6-anhydro-methyl-β-D-glucopyranosid (VII) erhalten. Wir nehmen an, daß die Reaktion über das Oxazolin IIIa verläuft.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19620950427
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  • 13
    Electronic Resource
    Electronic Resource
    Überführung von D-Glucosamin in ein Aziridinderivat des D-Allosamins (1964)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 97 (1964), S. 325-330 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der Umsetzung des Mesylats I mit Kaliumcyanid in Dimethylformamid entstanden das Aziridin II und das Oxazolin V nebeneinander. Die Konstitution von II wird durch Ringöffnungsreaktionen bewiesen, die im Gegensatz zu bisherigen Anschauungen zu Produkten mit trans-diäquatorialer Anordnung der neuen Substituenten führen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19640970204
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  • 14
    Electronic Resource
    Electronic Resource
    Zur Chemie der p-Chinole, VIII. Dienon-Phenol-Umlagerungen in TrifluoracetanhydridVgl. auch vorläufige Mitteil.: E. HECKER und E. MEYER, Angew. Chem. 76, 226 [1964];. (1964)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 97 (1964), S. 1926-1939 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Tolu-p-chinol-methyläther sowie Tetralin-p-chinol und dessen äther werden von Trifluoracetahydrid bei Raumtemperatur praktisch quantitativ zu Abkömmlingen des Hydrochinons aromatisiert. Die entsprechenden Acetate und Benzoate lagern sich unter den selben Bedingungen zu Resorcinderivaten um. Aus Tolu-p-chinol entsteht ein Gemisch von Toluhydrochinon und Kresorcin. Auch Δ/1.4-Androstadien-dion-(3.17) gibt ein Gemisch der 1.3-und 1.4-substituierten Umlagerungsprodukte. Der Mechanismus der Umlagerungen in Trifluoracetan-hydrid wird diskutiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19640970722
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  • 15
    Electronic Resource
    Electronic Resource
    Schwefel-Substitutionsprodukte von Aminozuckern II. S-β-D-Glucosaminylxanthogenat (1961)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 94 (1961), S. 2431-2436 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das Hydrochlorid des S-β-D-Glucosaminylxanthogenats (IV) wurde über zwei Zwischenprodukte aus dem kürzlich beschriebenen 1-Brom-1-desoxy-3.4.6-triacetyl-N-anisal-α-D-glucosamin (I) dargestellt: Raney-Nickel-Desulfurierung der O.N-Tetraacetylverbindung ergab den 2-Acetamino-2-desoxy-1.5-anhydro-D-sorbit, der ebenfalls durch Lithiumalanat-Reduktion des 1-Brom-1-desoxy-3.4.6-triacetyl-α-D-glucosamin-hydrobromids erhalten werden konnte.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19610940913
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  • 16
    Electronic Resource
    Electronic Resource
    Diaminozucker, V. Die Synthesen der 2.3-Diamino-2.3-didesoxy-D-allose, der 2.3-Diamino-2.3-didesoxy-α-D-glucose und der 2.6-Diamino-2.6-didesoxy-α-D-allose (1964)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 97 (1964), S. 1275-1285 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Diaminozucker werden aus den entsprechenden Mesylestern des D-Glucosamins durch Austausch mit Azid-Ion unter Walden-Inversion und anschließender Reduktion gewonnen. Die Konfiguration der 2.3-Diamino-2.3-didesoxy-D-glucose wird unabhängig durch einen Ringschluß zum 3.6-Iminoderivat bewiesen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19640970510
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  • 17
    Electronic Resource
    Electronic Resource
    Dimeric Silver(I) Complexes of Some Isothiazole-Based LigandsDedicated to Prof. Dr. Rolf Gleiter on the occasion of this 60th birthday. (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 95-100 
    Details
    ISSN: 0009-2940
    Keywords: Isothiazole complexes ; Dinuclear silver(I) complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of isothiazole-based potential ligands bearing substituents with additional donor sites in the 5-position of the heterocycle was synthesized [3-Me-5-R-C3HNS; R = CH=N(CH2)2py (1), CH=NCH2py (2), CH2N(CH2CH2NEt2)2 (4), (CH2)2SMe (5)]. Upon reaction with AgO3SCF3 they formed complexes [(1)AgOSO2CF3]2 (6), [(2)AgOSO2CF3]2 (7), [(4)Ag]2+2(O3SCF-3)2 (8) and [(5)AgOSO2CF3]2 (9), respectively. 6, 8 and 9 were shown by X-ray structural analyses to consist of dimeric units L2Ag2+2, either discrete (8), coordinated by terminal CF3SO-3 units (6). In 8 and 9 the isothiazole moiety is bonded to the metal center via the ring-N. The coordination potential of the isothiazole heterocycle is discussed.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971300115
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  • 18
    Electronic Resource
    Electronic Resource
    Pyrazolate-Based Oligonuclear Copper and Silver Complexes with N/S Coordination SpheresDedicated to Prof. Dr. Gottfried Huttner on the occasion of his 60th birthday. (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 1441-1447 
    Details
    ISSN: 0009-2940
    Keywords: Pyrazolate complexes ; Bridging ligands ; Copper ; Silver ; N,S-Donor Ligands ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of pyrazole-based potential ligands bearing thioether substituents in 3- and 5-positions of the heterocycle was synthesized [3,5-bis(RSCH2)-pyzH R=Ph (1aH), PhCH2 (1bH), iPr (1cH), tBu (1dH)]. These ligands afford oligonuclear Cu1 and Ag1 coordination compounds [LCu]x (2a-c, L = 1a - c) and [LAg]x (3a-d, L = 1a-d), respectively. The single crystal X-ray analysis of 3c shows the presence of trimeric planar arrays of N,N′-bridging pyrazolates and linear coordinated silver ions, with each two of the trinuclear moieties being linked by two unsupported short intermolecular Ag…Ag contacts [3.041(1) Å]. Molecular-weight determinations for 2a (THF) and 3c (toluene) indicate that hexanuclear entities are preserved in solution. Starting from 1bH the CuII complex [(1b)2Cu2](BF4)2 (4) was synthesized. According to an X-ray crystal structure analysis it consists of dinuclear molecules with two bridging pyrazolates, distorted square planar N2S2 coordination spheres for Cu11 and an axially bridging tetrafluoroborate. Magnetic susceptibility data reveal an antiferromagnetic exchange (J = -206 cm-1) that is among the highest found for doubly pyrazolate bridged dicopper(II) complexes, which is rationalized on the basis of the rather symmetric dinuclear core of 4. The irreversibility of the electrochemical reduction and oxidation processes for the CuII and CuI compounds, respectively, is explained by the inability of the respective coordination framework to adapt to different geometric preferences.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971301014
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  • 19
    Electronic Resource
    Electronic Resource
    Dinuclear Cobalt(II) Complexes of Pyrazole Ligands with Chelating Side ArmsDedicated to Prof. Dr. Walter Siebert on the occasion of his 60th birthday. (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 605-613 
    Details
    ISSN: 0009-2940
    Keywords: Pyrazolate complexes ; Dinuclear complexes ; Bridging ligands ; Cobalt ; Conformational analysis ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of pyrazole-based potential ligands bearing polydentate amine substituents in the 3- and 5-positions of the heterocycle has been synthesized [3,5-bis(R2NCH2)-pyzH R2N = Me2N(CH2)3NMe (2aH), [Me2N(CH2)3]2N (2bH), (Et2NCH2CH2)2N (2cH)]. Upon reaction with two equivalents of CoCl2 they form complexes LCo2Cl3 (3a-c; L = 2a-c, respectively) which are shown crystallographically to contain a dinuclear metal core bridged by both the pyrazolate unit and a chlorine atom, with each cobalt center carrying a further terminal chlorine atom. Two of the ligand side arms in 3b, c are dangling, thus leading to five-coordination of the cobalt(II) centers in all cases. Addition of two equivalents of NaBPh4 to solutions of 3b, c induced coordination of the formerly dangling side arms to the metal centers by substitution of the terminal chlorine atoms. The resulting compounds [LCo2Cl](BPh4)2 (4b, c, respectively) were characterized by X-ray structure analyses. They can be viewed as dinuclear linked versions of tran-type complexes [(tran = tris(aminoalkyl)amine] with distorted trigonal-bipyramidal coordination spheres around cobalt(II). Conformational analyses employing force-field calculations were carried out for 4b, c in order to rationalize the conformations observed in the solid state with regard to the accessible conformational space.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971300511
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  • 20
    Electronic Resource
    Electronic Resource
    1,1-Hydroborierung von Alkinen mit 6-Aza-nido-decaboranen (1995)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 128 (1995), S. 947-951 
    Details
    ISSN: 0009-2940
    Keywords: 6-Aza-nido-decaborane ; 9-(1-Alkenyl)-6-phenyl-6-aza-nido-decaborane ; 1,1-Hydroboration of alkynes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1,1-Hydroboration of Alkynes with 6-Aza-nido-decaboranes[1]Alkynes AC≡CR′ (R′ = Me, Bu, tBu, SiMe3), that contain a mobile group A, like H or SiMe3, undergo hydroboration by 6-aza-nido-decaboranes RNB9H11 (1a-c, R = H, Ph, PhCH2) and 1,2-migration of the group A, to give the corresponding 9-(1-alkenyl)-6-aza-nido-decaboranes RNB9H10(CH=CR′A) (2a-h). Ethenes AHC=CH2 (A = SiMe3, SnBu3) are hydroborated by 1a, b as well to form products of the type RNB9H10(CH2CH2A) (3a-c). The alkyne Me3SiC=CH undergoes a hydroboration with 1b twice; the formation of (PhNB9H10)2CHCH2SiMe3 (4) proceeds by a 1,1- and a 1,2-hydroboration step, apparently. The crystal structure analysis of (PhCH2)NB9H10[CH=CMe(SiMe3)] (2e; space group Pl) reveals a (Z configuration of the ethene moiety.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19951280916
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