Skip to main content
SpringerLink
Log in

Synthesen von heterocyclen, 129. Mitt.: Ein Beitrag zum Indolonproblem

Syntheses of heterocycles, CXXIX: A contribution to the indolon question

  • Organische Chemie und Biochemie
  • Published:
Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Zusammenfassung

o-Methylamino-phenylglyoxal-dimethylacetal (9), welches aus 4-Hydroxy-1-methyl-carbostyril in dreistufiger Reaktionsfolge zugänglich ist, gibt bei saurer Hydrolyse N,N′-Dimethylindigotin (10). Die Bildungsweise von10 wird im Hinblick auf das Indolonproblem diskutiert.

Abstract

o-Methylamino-phenylglyoxal dimethyl acetal9, obtained by a three step synthesis starting with 4-hydroxy-1-methyl-2-quinolone, gives N,N′-dimethyl-indigo10, if hydrolyzed under acid catalysis. The formation of10 is discussed in view of the “indolon problem”.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Author information

Authors and Affiliations

  1. Institut für Organische Chemie der Universität Graz, Graz, Österreich

    E. Ziegler, L. F. Werner & Th. Kappe

Authors
  1. E. Ziegler
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. L. F. Werner
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Th. Kappe
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Herrn Prof. Dr.Marius Rebek zum 80. Geburtstag gewidmet.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Ziegler, E., Werner, L.F. & Kappe, T. Synthesen von heterocyclen, 129. Mitt.: Ein Beitrag zum Indolonproblem. Monatshefte für Chemie 100, 610–615 (1969). https://doi.org/10.1007/BF00904110

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00904110

Search

Navigation