Stable diazonium salts of weakly basic amines—Convenient reagents for synthesis of disperse azo dyes
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- 作者：Jinjing Qiu ; Bingtao Tang ; tbt1976@sohu.com" class="auth_mail" title="E-mail the corresponding author ; Benzhi Ju ; Yuanji Xu ; Shufen Zhang
- 关键词：Stable solid diazonium salts ; Weakly basic amines ; Disperse azo dyes ; Diazotization
- 刊名：Dyes and Pigments
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：136
- 期：Complete
- 页码：63-69
- 全文大小：2271 K
文摘
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Diazotization of weakly basic amines occurred in the absence of concentrated sulfuric acid.
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Solid diazonium salts with good thermal stability were obtained.
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There is no dilution process of concentrated acid in the coupling reaction.
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Large amounts of ice are saved and energy consumption can be reduced.