Green synthesis of halogenated thiophenes, selenophenes and benzo[b]selenophenes using sodium halides as a source of electrophilic halogens
作者:Tanay Kesharwani、Krystal A. Giraudy、Jordan L. Morgan、Cory Kornman、Abayomi D. Olaitan
DOI:10.1016/j.tetlet.2017.01.007
日期:2017.2
Herein, we report the first synthesis of chlorinated benzo[b]selenophenes via environmentally friendly electrophilic chlorocyclization reaction using "table salt" as a source of "electrophilic chlorine" and ethanol as a solvent. In addition, the synthesis of diverse halogenated heterocycles, including 3-chloro, 3-bromo and 3-iodo thiophenes, selenophenes, and benzo[b]selenophenes was successfully accomplished
在此,我们报道了使用“食盐”作为“亲电子氯”的来源,并使用乙醇作为溶剂,通过环保的亲电子氯环化反应,首次合成了氯化苯并[b]硒代苯。另外,在相同的环境友好的反应条件下,成功地完成了包括3-氯,3-溴和3-碘噻吩,硒烯和苯并[b]硒烯在内的各种卤代杂环的合成。与其他先前报道的反应相比,该方法具有多种优势,因为它在温和的反应条件下采用简单的起始化合物,环境友好的溶剂,乙醇和无毒的无机试剂,从而提高了产品收率。