A new nitrite ionic liquid (IL-ONO) as a nitrosonium source for the efficient diazotization of aniline derivatives and in-situ synthesis of azo dyes

H Valizadeh, A Shomali

Index: Valizadeh, Hassan; Shomali, Ashkan Dyes and Pigments, 2012 , vol. 92, # 3 p. 1138 - 1143

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Citation Number: 23

Abstract

A new task-specific nitrite containing ionic liquid derived from the O-nitrosation of N-methyl- N-hydroxybutylimidazolinium chloride was synthesized and used as a source of nitrosonium ion to affect the efficient diazotization of arylamines. The diazonium salts thus obtained were coupled, using standard experimental procedures, to a range of tertiary anilines, phenols and naphthols to afford the requisite azo dyes in good yield. The diazotization and ...