Facile synthesis of aryl-azo dyes using dicationic ionic liquid based on DABCO
محل انتشار: بیستمین کنگره شیمی ایران
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 433
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شناسه ملی سند علمی:
IRANCC20_130
تاریخ نمایه سازی: 28 اردیبهشت 1398
چکیده مقاله:
As solvent or catalyst, ionic liquids (ILs) are known as versatile chemicals in diverse fields of the synthetic chemistry [1]. On the other hand, dicationic catalysts because of the great variety of harmonious interactions, high thermal stabilities and broader selectivity are a rapidly growing field [2-3]. The understanding of dicationic ionic liquids (DILs), which consist of two head groups linked by a rigid or flexible spacer and twomono-anions, is an interesting research topic because the numbers of possible combinations of cations and anions in dicationic ILs are greater than in monocationic ILs. In this work, a mild and efficient procedure have been reported for the synthesis of Azo dyes from corresponding amines using a dicationic acidic catalyst under green conditions at room temperature, which carried out via aryldiazonium salts intermediates. Easy work-up only with water is one of the important features of this method. In addition, all reactions are performed under mild conditions during acceptable reaction times in excellent yields.
نویسندگان
Shadi Nazari,
Department of chemistry, Faculty of Science, University of Guilan, Rasht, Iran
Omid Goli-Jolodar
Department of chemistry, Faculty of Science, University of Guilan, Rasht, Iran
Farhad Shirini
Department of chemistry, Faculty of Science, University of Guilan, Rasht, Iran
Hassan Tajik
Department of chemistry, Faculty of Science, University of Guilan, Rasht, Iran