The selective electrochemical fluorination of <i>S</i>-alkyl benzothioate and its derivatives
作者:Shunsuke Kuribayashi、Tomoyuki Kurioka、Shinsuke Inagi、Ho-Jung Lu、Biing-Jiun Uang、Toshio Fuchigami
DOI:10.3762/bjoc.14.27
日期:——
We herein report that the regioselective anodic fluorination of S-alkyl benzothioate and its derivatives in various aprotic solvents using Et3N·nHF (n = 3-5) and Et4NF·nHF (n = 3-5) as supporting electrolyte and a fluorine source successfully provided the corresponding α-fluorinated products in moderate yields. Dichloromethane containing Et4NF·4HF was found to be the most suitable combination as electrolytic
我们在此报告,使用Et3N·nHF(n = 3-5)和Et4NF·nHF(n = 3-5)作为支持电解质和氟源,在各种非质子传递溶剂中S-烷基苯硫代烷基酯及其衍生物的区域选择性阳极氟化成功以中等收率提供了相应的α-氟化产物。发现含有Et4NF·4HF的二氯甲烷是最合适的组合,作为电解溶剂和支持盐以及用于阳极氟化的氟源。还实现了环状苯甲硫酸酯如苯并噻吩的电化学氟化。