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  • Organic Chemistry  (19)
  • Optical activity
  • 1980-1984  (18)
  • 1950-1954  (1)
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  • 11
    Electronic Resource
    Electronic Resource
    En-Reaktionen mit 4-Methyl-N-sulfinylbenzolsulfonamid  -  Struktur und Reaktivität der En-Komponente (1980)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1980 (1980), S. 843-857 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of N-Sulfinyl Compounds, XII1).  -  Ene Reactions with 4-Methyl-N-sulfinylbenzolsulfonamid  -  Structure and Reactivity of the Ene Components4-Methyl-N-sulfinylbenzolsulfonamid (1) is a highly reactive enophile. Its reactions with a large number of alkenes 2 have been investigated. Structure-reactivity correlations, as well as conclusions about the regio- and stereospecifity of the reaction and subsequent processes are described.
    Notes: 4-Methyl-N-sulfinylbenzolsulfonamid (1) ist ein sehr reaktives Enophil. Seine Umsetzungen mit einer großen Zahl von Alkenen 2 wurden untersucht; die Ergebnisse erlauben Aussagen über Struktur-Reaktivitäts-Beziehungen bei 2 sowie die Regio- und Stereospezifität der Reaktion und ihrer Folgereaktionen.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198019800604
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  • 12
    Electronic Resource
    Electronic Resource
    Polyhydroxyamine via Diensynthese mit Nitrosoverbindungen, V. 1,3-Cyclohexadien-5,6-dicarbonsäurederivate als Reaktionspartner (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 210-223 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polyhydroxyamino Compounds via Diene Synthesis with Nitroso Compounds, V. 1,3-Cyclohexadiene-5,6-dicarboxylic Acid Derivatives as ReactantsThe use of 1,3-cyclohexadiene-5,6-dicarboxylic acid derivatives as educts for the reaction sequence: Diels-Alder reaction with nitroso compounds, reduction of the adducts, hydroxylation, gives hexa-substituted cyclohexanes. However, attempts to synthesize inosamines by this method failed.
    Notes: Die Verwendung von 1,3-Cyclohexadien-5,6-dicarbonsäurederivaten 1 als Edukte für die Reaktionsfolge: Diels-Alder-Reaktion mit Nitrosoverbindungen, Reduktion der Addukte, Hydroxylierung, führt zwar zu hexasubstituierten Cyclohexanen; Versuche zur Inosaminsynthese auf diesem Wege scheiterten jedoch.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810205
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  • 13
    Electronic Resource
    Electronic Resource
    Polyhydroxyamine via Diensynthese mit Nitrosoverbindungen, VII Synthese von Konduramin-F1 (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 610-611 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polyhydroxyamino Compounds via Diene Synthesis with Nitroso Compounds, VII1).  -  Synthesis of Conduramine-F1A two-step synthesis of conduramine-F1 with trans-1,3-cyclohexadien-5,6-diyldiacetat (1) as educt is described.
    Notes: Eine zweistufige Synthese von Konduramin-F1, ausgehend von trans-1,3-Cyclohexadien-5,6-diyldiacetat (1), wd beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810407
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  • 14
    Electronic Resource
    Electronic Resource
    Chemie reaktiver Kationen von Schwefeldioxidanalogen, IV. N-Methyl-N-sulfinylmethanaminiumsalze  -  Umsetzungen mit Carbonyl- und Thiocarbonylverbindungen (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 65-69 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemistry of Reactive Cations Derived from Sulfur Dioxide Analogues, IV1).  -  N-Methyl-N-sulfinylmethanaminium Salts  -  Reactions with Carbonyl and Thiocarbonyl CompoundsN-Methyl-N-sulfinylmethanaminium tetrafluoroborate (1) reacts with aromatic aldehydes by elemination of SO2 to form the imonium salts 3, with thiones, dithiocarboxylic, and trithiocarbonic acid derivatives by formal loss of S2O to give the imonium salts 5, 7, 10, and 12. The rotation barrier around the CN bond has been determined for 10 as 69.5 and for 12 as 77.8 kJ/mol.
    Notes: N-Methyl-N-sulfinylmethanaminium-tetrafluoroborat (1) reagiert mit aromatischen Aldehyden unter SO2-Abspaltung zu den Imoniumsalzen 3, mit Thionen, Dithiocarbonsäure- und Trithio-kohlensäurederivaten unter formaler Abspaltung von S2O zu den Imoniumsalzen 5, 7, 10 und 12. Die Rotationsbarriere um die CN-Bindung wird für 10 zu 69.5 und für 12 zu 77.8 kJ/mol bestimmt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810112
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  • 15
    Electronic Resource
    Electronic Resource
    Alkylierungsprodukte von Sulfinen und ThionimidenHerrn Prof. Dr. G. Manecke zum 65. Geburtstag gewidmet. (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 1505-1509 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Alkylation Products of Sulfines and Thione ImidesMethyl 2,4,6-trimethyldithiobenzoate S-oxide as well as sulfines (thione oxides) and thione imides derived from 3H-1,2-dithiol-3-thiones are alkylated by trimethyloxonium salts to give stable O-or N-alkyl derivatives, respectively.
    Notes: 2,4,6-Trimethyldithiobenzoesäure-methylester-S-oxid (2b) sowie die von 3H-1,2-Dithiol-3-thionen abgeleiteten Sulfine (Thionoxide) und Thionimide ergeben stabile Alkylierungsprodukte mit Trimethyloxoniumsalzen. Die Alkylierung erfolgt am O- bzw. N-Atom.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810822
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  • 16
    Electronic Resource
    Electronic Resource
    3H-1,2-Dithiol-3-thion-S-oxideHerrn Prof. Dr. G. Manecke zum 65. Geburtstag gewidmet. (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 1510-1512 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 3H-1,2-Dithiol-3-thione-S-oxidesThe sulfines 4 are synthetized by oxidation of the corresponding trithiones 1. The properties of 4 are described.
    Notes: Durch Oxidation der Trithione 1 werden die entsprechenden Sulfine 4 erhalten. Die Eigenschaften von 4 werden beschrieben.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810823
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  • 17
    Electronic Resource
    Electronic Resource
    Polyhydroxyamine via Diensynthese mit Nitrosoverbindungen, IV. Darstellung und Stereochemie von Didesoxyinosaminderivaten (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 202-209 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polyhydroxyamino Compounds via Diene Synthesis with Nitroso Compounds, IV.  -  Preparation and Stereochemistry of Dideoxyinosamine DerivativesThe general method for the synthesis of polyhydroxy amines by Diels-Alder reactions with a nitroso compound, reduction of the adduct with cleavage of the N  -  O bond and hydroxylation of the remaining C = C-double bond, can also be realized with α-chloronitrosocyclohexane as dienophile, in good yield. Primary amines are synthesized in this way.
    Notes: Der generelle Weg zur Synthese von Polyhydroxyaminen über die Stufen Diels-Alder-Reaktion mit einer Nitrosoverbindung, Reduktion des Adduktes unter Spaltung der N  -  O-Bindung und Hydroxylierung der verbliebenen C = C-Doppelbindung, ist auch mit α-Chlornitrosocyclohexan als Reagens in guter Ausbeute realisierbar; er führt zu primären Aminen.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810204
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  • 18
    Electronic Resource
    Electronic Resource
    Polyhydroxyamine via Diensynthese mit Nitrosoverbindungen, VI. Synthese von Inosaminderivaten (1981)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1981 (1981), S. 224-232 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polyhydroxyamino Compounds via Diene Synthesis with Nitroso Compounds, VI.  -  Syntheses of Inosamine DerivativesWith trans-6-methoxy-1,3-cyclohexadiene-5,6-diyldiacetate or -5,6-diol inosamine derivatives are synthesized in good yield.
    Notes: Aus trans-6-Methoxy-1,3-cyclohexadien-5,6-diyldiacetat oder -5,6-diol lassen sich in guter Gesamtausbeute Inosaminderivate synthetisieren.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198119810206
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  • 19
    Electronic Resource
    Electronic Resource
    Notizen Chemie reaktiver Kationen von Schwefeldioxid-Analogen, VII. Methylierung von 4-Sulfinylamino-4H-1,2,4-triazol (1982)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1982 (1982), S. 1384-1386 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The methylation of 4-Sulfinylamino-4H-1,2,4-triazole (2) affords the N-1-methyl derivative 6. Compound 2 as well as 6 undergo Diels-Alder reactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198219820715
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