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115. 4-Cyano-6-methoxyquinolones: Syntheses and Luminescence Properties
Enoua G. C., Uray G., Stadlbauer W.,
in Proceedings of ECSOC-13, The Thirteenth International Electronic Conference on Synthetic Organic Chemistry, http://www.usc.es/congresos/ecsoc/13/index.htm, November 1-30, 2009 (a012); J. A. Seijas, Shu-Kun Lin, M. P. Vázquez Tato (Eds). CD-ROM, edition ISBN 3-906980-23-5, Published in 2009 by MDPI, Basel, Switzerland.

Abstract:
Cyano functionalized 6-methoxyquinolin-2-ones were synthesized from malonic acid derivatives and p-anisidines in multistep reactions via 4-chloro- 6-methoxyquinolin-2-ones. Introduction of cyano substituents resulted in 3,4-dicyano-6-methoxyquinolin-2-ones or 4-cyano-6-methoxyquinolin-2-ones, depending on the substituents in position 3 and 1. The study of the fluorescence properties of 3,4-dicyano- 6-methoxyquinolone showed emission values up to 550 nm (black curve) combined with large Stoke's shifts , whereas 4-cyano-6-methoxyquinolones gave lower values (e.g. blue curve) comparable to earlier findings.


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