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4-Hydroxy-1,3-thiazoles 1, being ‘classical’ heterocycles, revealed unexpected physicochemical properties. The compounds show pH-sensible fluorescence, which can be employed for the generation of white emission light. NMR data and quantum chemical results provide a better insight into the keto-enol-tautomerism and the nature of the chromophoric system.
Bioactive naphthoquinone-derived heterocyclic compounds have been prepared. Herein, we describe the semisynthesis of a new phenazine, through modified Hooker’s reaction, using lapachol as a precursor. This compound was characterised by 2D NMR spectroscopy methods and X-ray analysis.
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