Skip to content
BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Zur Reaktivität von C=N-Doppelbindungssystemen, VII. Synthesen von fluoreszierenden pyronokondensierten Heterocyclen / The Reactivity of the C=N-Double Bond Systems, VII. Syntheses of Condensed Pyronoheterocycles

  • Otto S. Wolfbeis and Erich Ziegler

The combined action of orthoformate and aniline upon 4-hydroxy-coumarin yields anilinomethylene chromon-2,4-dione, which reacts with ethyl cyanoacetate in DMF in the presence of KOH to give the pyronocoumarine (6a). Pyronoquinolones are obtained in a similar way.

Received: 1975-12-8
Published Online: 2014-6-2
Published in Print: 1976-4-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Downloaded on 20.4.2024 from https://www.degruyter.com/document/doi/10.1515/znb-1976-0423/html
Scroll to top button