Catalyst- and Supporting-Electrolyte-Free Electrosynthesis of Benzothiazoles and Thiazolopyridines in Continuous Flow
作者:Ana A. Folgueiras-Amador、Xiang-Yang Qian、Hai-Chao Xu、Thomas Wirth
DOI:10.1002/chem.201705016
日期:2018.1.9
N‐arylthioamides have been converted to the corresponding benzothiazoles in good to excellent yields and with high current efficiencies. This transformation is achieved using only electricity and laboratory grade solvent, avoiding degassing or the use of inert atmosphere. This work highlights three advantages of electrochemistry in flow, which is (i) a supporting electrolyte‐free reaction, (ii) an easy scale‐up
已经开发出了一种在连续流动中形成电化学脱氢CS键的无催化剂和支持电解质的方法。广泛的N‐芳基硫代酰胺已以良好或优异的收率和高电流效率转化为相应的苯并噻唑。仅使用电力和实验室级的溶剂即可实现这种转化,避免脱气或使用惰性气氛。这项工作突出了流动电化学的三个优点,即(i)无电解质支持的反应;(ii)无需大型反应器即可轻松扩大反应规模;以及(iii)重要而有效的影响反应混合物具有良好的混合效果,这可以通过使用流动系统有效地实现。这显然改善了已报道的苯并噻唑合成方法。