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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis and Structural Characterizationof 6,11-Dihydrodibenz[b,e]oxepinones (1999)
    Springer
    Monatshefte für Chemie 130 (1999), S. 1475-1480 
    Details
    ISSN: 1434-4475
    Keywords: Keywords. Cyclodehydration; 6 ; 11-Dihydrodibenz[b ; e]oxepin-1-one; 2-(Phenoxymethyl)-benzoic acid; Phthalide; X-Ray structure determination.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung.  6,11-Dihydrodibenz[b,e]oxepin-11-one wurden durch Cyclodehydratisierung von 2-(Phenoxymethyl)-benzoesäuren – hergestellt durch Reaktion der entsprechenden Phenole mit Phthaliden – erhalten. Die Cyclodehydratisierung war am effektivsten bei Verwendung von Polyphosphorsäureester. Eine der Titelverbindungen wurde durch Röntgenstrukturanalyse charakterisiert.
    Notes: Summary.  6,11-Dihydrodibenz[b,e]oxepin-11-ones were obtained by cyclodehydration of 2-(phenoxymethyl)-benzoic acids prepared by reaction of the corresponding phenols with phthalids. Cyclodehydration was found to be most effective using polyphosphoric acid ester. The structure of one of the title compounds was determined by X-ray crystal structure analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007060050306
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  • 2
    Electronic Resource
    Electronic Resource
    Thiocarbamoylierung von CH-aciden Arylsulfinyl- und Arylthio- Verbindungen (1995)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 337 (1995), S. 29-33 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Thiocarbamoylation of CH-Acidic Arylsulfinyl and Arylthio CompoundsReaction of arylsulfinyl and arylthio acetonitriles (1) with phenyl isothiocyanate in the presence of sodium hydride and subsequent alkylation lead to the ketene S,N-acetals (3a-h). Using methyl bromoacetate as alkylating agent thiazolidones (4a-c) are formed whereas phenacylbromide gives the 4-hydroxythiazolidines (5a-f). In an analogous way arylthio and arylsulfinyl acetophenones (6) react with phenyl isothiocyanate yielding S,N-acetals (7a-e).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19953370106
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  • 3
    Electronic Resource
    Electronic Resource
    Ambidoselective Dithiocarboxylation and Thiocarbamoylation of β-Keto Enolates (1992)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1992 (1992), S. 387-393 
    Details
    ISSN: 0170-2041
    Keywords: Push-pull alkenes ; Thiophenes ; Thieno[2,3-b]thiophenes ; Thiazolidin-4-ones ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Treatment of β-keto enolates 1 with carbon disulfide in the presence of sodium hydride and subsequent alkylation yield the open-chain or cyclic acylformylketene S,S-acetals 3 and 4, respectively. Thiophenes 5, 6, or 7 and thieno[2,3-b]thiophenes 8 are formed by using as alkylating agents first methyl iodide and then an α-CH-acidic halo compound or only two equivalents of the latter. β-Keto enolates 1 also react with phenyl isothiocyanate to give acylformylketene S,N-acetals 10, aroylthiophenes 11 or thiazolidin-4-ones 12.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199219920168
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  • 4
    Electronic Resource
    Electronic Resource
    Dithiocarboxylierung von CH-aciden Sulfoxiden und Thioethern (1992)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1992 (1992), S. 395-398 
    Details
    ISSN: 0170-2041
    Keywords: Sulfoxides ; Ketene S,S-acetals ; Thiophenes ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dithiocarboxylation of CH-Acidic Sulfoxides and ThioethersReaction of (arylsulfinyl)acetonitriles or (arylthio)acetonitriles 1 (X = SO, S) with carbon disulfide in the presence of sodium hydride and subsequent alkylation yield the open-chain or cyclic ketene S,S-acetals 3 or 4, respectively. Using two equivalents of an α-CH-acidic halo compound as alkylating agent, thiophenes 5 are formed. Treatment of 3a with 2-mercaptoethanol affords the 1,3-oxathiolane 6. The 1H-NMR spectra of phenylsulfinyl-substituted compounds 3b, 4a, 4b, 5a and 6 show a typical AB system for the methylene group caused by the chiral sulfoxide group.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199219920169
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis and Reactions of Pyridinethiones (1993)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1993 (1993), S. 1003-1007 
    Details
    ISSN: 0170-2041
    Keywords: Pyridinethiones ; Pyridinecarbonitriles ; Thieno[2,3-b]pyridines ; Nitriles ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The push-pull systems 1 and 7 undergo regioselective cyclization with cyanothioacetamide 2 leading to pyridinethiones 3 and 8. Subsequent S-alkylation affords the alkylthio derivatives 5 and 10. Thieno[2,3-b]pyridines 6 and 11 are formed by using an α-CH-acidic halogen compound as alkylating agent, followed by Thorpe-Ziegler reaction. The cyano group in 6d and 11d can be converted into an imidazoline ring by treatment with 1,2-diaminoethane hydrate and carbon disulfide. Structures are supported by spectral data as well as by X-ray analysis of 5d.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.1993199301159
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