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Synthesen von Heterocyclen, 147. Mitt.: Chinolizine und Indolizine VII: Zur Synthese eines Benzindolizino-indigofarbstoffes

Syntheses of heterocycles, CXLVII: Quinolizines and indolizines VII: The synthesis of a benzindolizino-indigo

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

Zusammenfassung

Durch saure Hydrolyse des Tetrahydrochinolin-8-glyoxalacetals7, welches in dreistufiger Reaktion aus dem Benzchinolizinon1 zugänglich ist, erhält man neben dem Benzindolizino-indigo8 den Indirubinfarbstoff9 sowie das Isatin-10 und das Dioxindolderivat11.

Abstract

Acid catalized hydrolysis of tetrahydroquinoline-8=glyoxalacetal7, obtained by a three step synthesis starting with the benzoquinolizinone1, yields not only the benzindolizino-indigo8, but also the indirubin dye9, the isatin derivative10, and the dioxindole derivative11.

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Authors and Affiliations

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

    Th. Kappe, G. Baxevanidis & E. Ziegler

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  1. Th. Kappe
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  2. G. Baxevanidis
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  3. E. Ziegler
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Herrn Prof. Dr.R. Tschesche, Bonn, zum 65. Geburtstag gewidmet.

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Kappe, T., Baxevanidis, G. & Ziegler, E. Synthesen von Heterocyclen, 147. Mitt.: Chinolizine und Indolizine VII: Zur Synthese eines Benzindolizino-indigofarbstoffes. Monatshefte für Chemie 101, 932–940 (1970). https://doi.org/10.1007/BF00909913

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  • DOI: https://doi.org/10.1007/BF00909913

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