## Abstract New reactive dyes, 2‐arylazo‐1‐vinylpyrroles, have been synthesized in 52–94 % yield by a modified azo coupling of readily accessible 1‐vinylpyrroles with arenediazonium hydrocarbonates in aqueous ethanol (≈3:1) at 0 °C. The __λ__~max~ values for the UV/Vis absorption of the dyes ranges
2-Arylazo-1-vinylpyrroles: A Novel Promising Family of Reactive Dyes.
✍ Scribed by Boris A. Trofimov; et al. et al.
- Publisher
- John Wiley and Sons
- Year
- 2006
- Weight
- 27 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0931-7597
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## Abstract Conformational study of 2‐phenylazo‐1‐vinylpyrrole and 2‐(4‐bromophenyl)azo‐5‐methyl‐1‐vinylpyrrole was performed on the basis of the experimental measurements and high‐level __ab initio__ calculations of their ^13^C^13^C and ^13^C^1^H spin–spin coupling constants, showing marked ster
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