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Simple route to a novel class of pyrazolidine-3,5-dione based azo dyes

✍ Scribed by Jalal Isaad; Anne Perwuelz

Book ID: 104098187
Publisher: Elsevier Science
Year: 2010
Tongue: French
Weight: 517 KB
Volume: 51
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2010.08.002

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✦ Synopsis

We report an easiest synthesis strategy of a new class of synthetic dyes by coupling of functionalized pyrazolidine-3,5-dione derivatives via diazotization reaction with aromatic diamine for the azoic dyes or via dimerization reaction to synthesize the H chromophore dyes. Electron delocalization between the two coupled components has been studied using UV-vis spectroscopy, infrared, and NMR spectroscopy. In addition, the formation mechanism of such compounds has been discussed.

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