Library

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions with Diazocarbonyl Compounds, XXXII1). Synthesis of 2-Carboxy-5-hydroxytryptamine and Pyridazine Derivatives. Japp-Klingemann-Synthesis with p-Hydroxy-phenyl-diazonium Salts or p-Chinon-diazides, respectivelyp-Hydroxybenzenediazoniumchloride (1) and 2,6-dichloro-1,4-benzoquinone-4-diazide (2) react with 3-ethoxycarbonyl-2-piperidone (3) and with ethyl 2-acetyl-4-cyanobutyrate (10) (Japp-Klingemann synthesis) to give 4-hydroxyphenylhydrazones 6, 7 nad 11, 12 respectively. The hydrazones 6 and 7 are converted into the 5-hydroxyindole dervatives 8 and 9 (E. Fischer indole synthesis), while the hydrazone 12 is cyclized to the tetrahydropyridazine derivatives 13 and 14.
    Notes: p-Hydroxy-benzoldiaziniumchlorid (1) und 2.6-Dichlor-benzochinon-(1.4)-diazid-(4) (2) werden mit 3-Äthoxycarbonyl-piperidon-(2) (3) und mit 2-Acetyl-4-cyan-buttersäureäthylester (10) nach Japp und Klingemann zu den 4-Hydroxy-phenylhydrazonen 6 und 7 bzw. 11 und 12 umgesetzt. Die Hydrazone 6 und 7 lassen sich nach E. Fischer in die 5-Hydroxy-indol-Derivate 8 und 9 überführen, während das Hydrazon 12 zu den Tetrahydropyridazin Derivaten 13 und 14 cyclisiert.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...