کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1270171 972479 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of aryl azides: A probe reaction to study the synergetic action of ultrasounds and ionic liquids
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis of aryl azides: A probe reaction to study the synergetic action of ultrasounds and ionic liquids
چکیده انگلیسی

The combined effect of ultrasounds and ionic liquids was used to perform the synthesis of aryl azides by nucleophilic aromatic substitution in ionic liquid/[1-butyl-3-methylimidazolium][N3] binary mixtures. The ultrasounds efficiency was analyzed as a function of the substrate and of the ionic liquid structure. In the first case, both 6π and 10π electrons aryl halides were considered. As far as the ionic liquid structure is concerned, both aromatic and aliphatic ionic liquids were taken into account. Among aromatic cations, the effects due to different ability in giving hydrogen bond or π–π interactions were considered. The use of a geminal ionic liquid having an aromatic spacer was examined too.On the whole, collected data evidence an activating effect on the target reaction by the combined use of ultrasounds and ionic liquids. The structural order degree of the ionic liquid seems to be the main factor affecting the ultrasounds efficiency. Furthermore, the effects due to changes in the anion structure seem to be more significant than those due to changes in the cation structure.


► The combined effect of ultrasounds and ionic liquids on a SNAr reaction.
► The influence of the structural order degree of ionic liquids on the ultrasounds efficiency.
► The significant improvement on the studied reaction in terms of reaction time and energy consumption.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 19, Issue 1, January 2012, Pages 136–142
نویسندگان
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