Jyh Jian Chen, I. Wang
1995
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Influential Citations
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Journal
Dyes and Pigments
Abstract
A series of 3-cyano-4-substituted-6-pyrenyl-2-pyridone derivatives (7a–7h) was prepared by cyclization of ethyl 2-cyano-3-substituted acrylates (5a–5h) with 3-acetylpyrene (6) in the presence of ammonium acetate. Reaction of compounds 7a and 7b with POCl3PCl5 gave the 2-chloro-3-cyano-4-substituted-6-pyrenylpyridines (8a and 8b). 1-Methyl-3-cyano-4-phenyl-6-pyrenyl-2-pyridone (9a) was prepared by interaction of compound 7a and methyl iodide. The structures of the compounds were confirmed by IR, 1H NMR, mass spectra and elemental analysis. The fluorescence behaviour of compounds 7a–7h was also studied.