Abstract
A new ionic liquid 1-(3-trimethoxysilylpropyl)-3-methylimidazolium nitrite was synthesized. This ionic liquid was used as a convenient nitrosonium source in diazotization of arylamines into their corresponding diazonium salts which were converted into their related azo dyes via the in situ azo-coupling with aniline derivatives or phenolic compounds. The diazotization of anilines in this ionic liquid and subsequent azo-coupling generated the related azo dyes in good to excellent yields at 0–5 °C in short reaction times via a simple experimental procedure.
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Valizadeh, H., Amiri, M., Shomali, A. et al. Ionic liquid 1-(3-Trimethoxysilylpropyl)-3-methylimidazolium nitrite as a new reagent for the efficient diazotization of aniline derivatives and in situ synthesis of azo dyes. JICS 8, 495–501 (2011). https://doi.org/10.1007/BF03249083
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DOI: https://doi.org/10.1007/BF03249083