Abstract
In this work, a series of novel azo-coumarin dyes were successfully synthesized by the diazotization of 7-amino coumarins followed by coupling with phenol derivatives. The diazotization and subsequent azo-coupling generated the related azo dyes at 0–5 °C in short reaction times with a simple experimental procedure. The spectral analysis of the resulted compounds was confirmed the proposed structures. By this development, the scope of heterocyclic compounds was increased.
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