Study of S NAr Reactions of Halobenzenes with Imidazole under Ultrasonic and Microwave Irradiation
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- 作者：M谩ria Me膷iarov谩 A1 ; Janka Podlesn谩 A1 ; 艩tefan Toma A1
- 关键词：Keywords. Nucleophilic aromatic substitutions ; Halobenzenes ; Imidazole ; Microwave irradiation ; Ultrasonic irradiation.
- 刊名：Monatshefte für Chemie / Chemical Monthly
- 出版时间：April 2004
- 出版年：2004
- 期刊代码：99_0026-9247
- 类别：ch
- 卷：135
- 期：4
- 页码：419-423
- 数据来源：sp
摘要
Summary. Nucleophilic aromatic substitution reactions with imidazole of haloarenes having strongly electron-withdrawing groups were studied under ultrasonic and microwave irradiations. The course of the S NAr reactions was found to be strongly dependent on the electron-withdrawing properties of the substituents as well as on the leaving ability of the halogen atom. Microwave irradiation allowed to shorten the reaction time and to increase the yields compared with ultrasonic irradiation.