Electrosynthesis of vinyl sulfones from alkenes and sulfonyl hydrazides mediated by KI: Аn electrochemical mechanistic study
作者:Alexander O. Terent'ev、Olga M. Mulina、Dmitry A. Pirgach、Alexey I. Ilovaisky、Mikhail A. Syroeshkin、Nadezhda I. Kapustina、Gennady I. Nikishin
DOI:10.1016/j.tet.2017.10.047
日期:2017.12
sulfones were prepared from alkenes and sulfonyl hydrazides via electrochemical oxidative sulfonylation. The reaction proceeds in an experimentally convenient undivided electrochemical cell equipped with graphite and iron electrodes employing KI as a redox catalyst and a supporting electrolyte. Applying extremely high current density up to 270 mA/cm2 permits rapid synthesis in a compact reactor and
由烯烃和磺酰肼通过电化学氧化磺酰化反应制备了各种乙烯基砜。该反应在配备了石墨和铁电极且使用KI作为氧化还原催化剂和支持电解质的实验方便的未分隔电化学电池中进行。施加高达270 mA / cm 2的极高电流密度,可以在紧凑的反应器中以小表面积电极快速合成。利用循环伏安法提出了一种可能的反应机理。在该反应中阳极和阴极过程的结合使得可以在温和的条件下以中等至高的产率获得产物。