ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
Filter
  • Wiley-Blackwell  (3)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 319 (1977), S. 317-323 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Derivatives of Halogenated Aldehydes. XI. Substitution Reactions of 2,5-Bis-Trichloromethyl- and 2-Trichloromethyl-5-dichloromethylene-1,3-dioxolan-4-one Oxime2,5-Bis-trichloromethyl- (1) and 2-trichloromethyl-5-dichloromethylene-1,3-dioxolan-4-one oxime 2 are acylated with acyl halides, alkyl chlorocarbonates and N,N-dimethylcarbamyl chloride to give the corresponding O-acyl oximes 4-6, 9, 11 and 13. The addition of the oximes 1 and 2 to isocyanates yields the oxime carbamates 7 and 10, and the addition to N-acetyl-2,2,2-trichloroacetaldimine leads to the O-(1-acetamino-2,2,2-trichloroethyl) oximes 8 and 12. Oxime 2 forms a sodium salt 3 which gives the O-alkyl (15), the O-aryl (16) and the O-sulphonyl oximes (14) by reactions with alkyl halides or dialkyl sulfates, with activated aryl halides or with sulphonyl chlorides, respectively.
    Notes: 2,5-Bis-trichlormethyl- (1) und 2-Trichlormethyl-5-dichlormethylen-1,3-dioxolan-4-on-oxim 2 werden durch Acylieren mit Carbonsäurechloriden, Chlorkohlensäureestern und N,N-Dimethylcarbamoylchlorid in die entsprechenden O-Acyl-oxime 4-6, 9, 11 und 13 übergeführt. Durch Addition der Oxime 1 und 2 an Isocyanate entstehen die Oxim-carbamate 7 und 10 und durch Addition an N-Acetyl-2,2,2-trichloracetaldimin die O-(1-Acetamino-2,2,2-trichloräthyl)-oxime 8 und 12. Das Oxim 2 bildet ein Natriumsalz 3, das bei den Umsetzungen mit Alkylhalogeniden oder Dialkylsulfaten die O-Alkyl-oxime 15, mit aktivierten Arylhalogeniden die O-Aryl-oxime 16 und mit Sulfonsäurechloriden die O-Sulfonyl-oxime 14 ergibt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 321 (1979), S. 327-330 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Solvent Dependence of the Barriers to Rotation about the C=C-Double Bond in Substituted Acrylates
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 320 (1978), S. 457-462 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1H-N.M.R. Spectroscopic Investigations on Innermolecular Mobility of Substituted AcrylatesThe barriers of rotation around the C=C-bond of, ethyl 3-arylamino-2-nitro-acrylates 1 and ethyl 3-arylamino-2-cyano-acrylates 2 have been determined by dynamic n.m.r. spectroscopy. From coalescence phenomena the free activation enthalpies ΔG≠ of rotational processes are determined and discussed with respect to substituent effects.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...