Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Di- und Polyaminozucker, XXI. Synthese von Derivaten der 2,4-Diamino-2,3,4-tridesoxy-D-ribo-hexose (1975)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 3397-3411 
    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, XXI. Synthesis of Derivatives of 2,4-Diamino-2,3,4-trideoxy-D-ribo-hexoseStarting with D-glucose the title compound has been synthesized as its di-N-acetyl. -trifluoroacetyl and N,N′-bis(2,4-dinitrophenyl) derivative. The free sugar could not be obtained in a pure state.
    Notes: Die Titelverbindung wurde, ausgehend von D-Glucose, in Form ihres Di-N-acetyl-, -trifluoracetyl- und ihres N,N′-Bis(2,4-dinitrophenyl)-Derivates erhalten. Reindarstellung des freien Zuckers gelang nicht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19751081031
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Heterocyclische Siebenring-Verbindungen, XVI. Synthese gezielt 3,5-substituierter 4-Phenyl-1-benzothiepine (1975)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 3596-3610 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Heterocyclic Seven-membered Ring Compounds, XVI. Synthesis of 3,5-Substituted 4-Phenyl-1-benzothiepins4-Phenyl-1-benzothiepins 7 and 8 are synthesized starting from their 5-methoxy-2,3-dihydro-precursor 2; using the 2,5-dihydro-intermediate 12 yields the 4-phenyl-1-benzothiepins 13 and 14. The 1-benzothiepin 17 can be obtained from the diketone 1 directly. The 3-cyano-substituted compound 22 is prepared from its 2,5-dihydro-precursor 21. Some ring-contraction and ring-cleavage reactions of the heterocyclic seven-membered ring-system are described.
    Notes: Die 5-Methoxy-2,3-dihydro-Vorstufe 2 wird in die 4-Phenyl-1-benzothiepine 7 und 8 übergeführt; aus der 2,5-Dihydro-Vorstufe 12 werden die 4-Phenyl-1-benzothiepine 13 und 14 dargestellt. Das 1-Benzothiepin 17 wird direkt aus dem Siebenring-Diketon 1 erhalten. Das 3-cyan-substituierte 1-Benzothiepin 22 erhält man aus der 2,5-Dihydro-Vorstufe 21. Es werden einige Ringverengungsbzw. Ringspaltungsreaktionen des heterocyclischen Siebenring-Systems beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19751081121
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Phosphorhaltige Kohlenhydrate, XVII: Untersuchung der Hydrierung ungesättigter Glycosylphosphonate. Anomerer Effekt und A-Wert der Dimethylphosphono-Gruppe (1978)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 3325-3335 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Phosphorus-containing Carbohydrates, XVII: Studies on the Hydrogenation of Unsaturated Glycosylphosphonates. Anomeric Effect and A-Value of the Dimethylphosphono GroupBy hydrogenation unsaturated glycosylphosphonates of type 1 give rise to the formation of 2,3-dideoxyglycosylphosphonates 2 and 2,3,4-trideoxyglycosylphosphonates 3. Their product ratio depends on configuration and conformation of the educts 1a-f. 1H and 13H and 13C NMR data permit an assigment of the anomers of the hydrogenated glycosylphosphonates. For the one-bond coupling constant between 13C-1 and 31P the correlation 1JC, Peq 〉 1JC, Pax is valid, which exhibits a difference of 19-23 Hz. The unsaturated glycosylphosphonates show deviations from Hudson's isorotation rule. In dimethyl cis-4-methyl-1-cyclohexanephosphonate (9) the A-value of the dimethylphosphono group has been determined to 8.34 kJ/mol. The ratio of conformers in 3a leads to an anomeric effect of the dimethylphosphono group of 2.33 kJ/mol.
    Notes: Ungesättigte Glycosylphosphonate vom Typ 1 liefern bei der Hydrierung außer 2,3-Didesoxyglycosylphosphonaten 2 auch 2,3,4-Tridesoxyglycosylphosphonate 3. Das Produktverhältnis ist von Konfiguration und Konformation der Ausgangsprodukte 1a-f abhängig. 1H- und 13C-NMR-Daten erlauben eine Anomerenzuordnung der hydrierten Glycosylphosphonate. Für die 13C-31P-Direktkopplung an C-1 gilt 1JC, Peq 〉 1JC, Pax mit einer Differenz von 19-23 Hz. Die ungesättigten Glycosylphosphonate zeigen Abweichungen von der Hudsonschen Regel. Am Dimethyl-cis-4-methyl-1-cyclohexanphosphonat (9) wurde der A-Wert der Dimethylphosphono-Gruppe zu 8.34 kJ/mol bestimmt. Aus der Konformerenverteilung bei 3a ergibt sich der anomere Effekt der Dimethylphosphono-Gruppe zu 2.33 kJ/mol.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19781111006
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie des Indols, VIII. Decarboxylierungen einiger 1-Alkyl-2-carboxy-3-indolessigsäuren sowie Synthese eines 5-Thiocyanato-2,3-dihydroindols (1975)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 3538-3542 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Not mentioned2a-d, easily produced from the N-alkyl-N-phenylhydrazines 1a-d and 2-oxoglutaric acid, are decarboxylated to the compounds 4a-d in high yields. 2a is reduced to the 2,3-dihydro compound 3a and reacts via the amide 5a to the 5-thiocyanato derivative 6a.
    Notes: Contributions to the Chemistry of Indole, VIII. Decarboxylations of Some 1-Alkyl-2-carboxy-3-indolacetic Acids and Synthesis of a 5-Thiocyanato-2,3-dihydroindole-d, leicht darstellbar aus N-Alkyl-N-phenylhydrazin und 2-Oxoglutarsäure, werden mit hoher Ausbeute zu 4a-d decarboxyliert. 2a wird zum Dihydroindol 3a reduziert und über das Amid 5a zum 5-Thiocyanatoderivat 6a umgesetzt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19751081115
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Chloro- und Bromo-Indate (III). A3In2Cl9 (A = Cs, Rb, In, Tl) und Cs3In2Br9-x Clx (x = 0, 3, 6, 7, 8) (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 445 (1978), S. 140-146 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chloro- and Bromo-Indates (III). A3In2Cl9 (A = Cs, Rb, In, Tl) and Cs3In2Br9-xClx (x = 0, 3, 6, 7, 8)A3IIn2Cl9 (A = Cs, Rb, Tl, In) and Cs3In2Br9-xClx (x = 7, 8) crystallize isotypic with Cs3Tl2Cl9. The crystal structure has been refined to R = 0.039 by means of single crystals of Cs3In2Cl9. Cs3In2Br9 and the mixed crystals Cs3In2Br9-xClx (x = 3, 6, 7) belong to the Cs3Cr2Cl9 type of structure; Cs3In2Br2Cl7 is dimorphic.
    Notes: A3IIn2Cl9 (A = Cs, Rb, Ti, In) sowie Cs3In2Br9-x Clx (x = 7,8) kristallisieren isotyp mit Cs3Tl2Cl9. Die Kristallstruktur wurde an Einkristallen von Cs3In2Cl9 bis R = 0,039 verfeinert. Cs3In2Br9-xClx (x = 3, 6, 7) gehören dem Cs3Cr2Cl9-Typ an; Cs3In2Br2Cl7 ist dimorph.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784450117
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Neue Vernetzung planarer Polyeder um Pd2+ in PbPdO2 (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 442 (1978), S. 26-30 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A New Cross Linkage of Planare Polyhedra around Pd2+ in PbPdO2PbPdO2 was prepared and investigated by X-ray single crystal data: a = 946.0, b = 546.3, c = 466.0 pm; Space group D282h-Imma. Pd2+ has a square planare surrounding of O2- and Pb2+ shows the same configuration in respect to the O2- neighbour analogous to the red PbO.
    Notes: Die Verbindung PbPdO2 wurde dargestellt und ihr bisher unbekannter Aufbau untersucht. Einkristallröntgendaten ergaben a = 946,0 b = 546,3 c = 466,0 pm, Raumgruppe D282h-Imma. Pd2+ besitzt eine quadratische planare Koordination von O2-, Pb2+ zeigt die gleichen Polyeder wie in rotem PbO.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784420104
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Halogen-Elpasolithe. III. Kubische und hexagonale Elpasolithe vom Typ Cs2LiMIIICl6 (MIII = Sc, Y, La-Nd, Sm-Lu, V, Cr, In) (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 445 (1978), S. 147-151 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Halogeno-Elpasolites. III. Cubic and Hexagonal Chloro-Elpasolites: Cs2LiMIIICl6Chloro-Elpasolites of Cs2LiMIIICl6 formula type adopt, due to the ionic radius of M3+, several crystal structures: Cs2LiMCl6 (M = Y, La—Nd, Sm—Yb) are isotypic K2NaAlF6 Cs2LiScCl6 and Cs2LiInCl6 with Cs2NaCrF6, Cs2LiVCl6 and Cs2LiCrCl6 with Cs2LiGaF6. Cs2LiLuCl6 is dimorphic: several temperature-dependent transitions between HT-K2LiAlF6 and K2NaAlF6 structure types occur.
    Notes: Chlor-Elpasolithe vom Typ Cs2LiMIIICl6 gehören, abhängig vom Ionenradius r(M3+), verschiedenen Strukturtypen an: Cs2LiMCl6 (M = Y, La—Nd, Sm—Yb) dem kubischflächenzentrierten K2NaAlF6-Typ, Cs2LiScCl6 und Cs2LiInCl6 sind isotyp mit Cs2NaCrf6, Cs2LiVCl6 und Cs2LiCrCl6 mit Cs2LiGaF6; Cs2LiLuCl6 ist dimorph (mehrere temperaturabhängige Übergänge zwischen dem HT-K2LiAlF6- und dem K2NaAlF6-Typ).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784450118
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...