Electrochemical Radical Formyloxylation–Bromination, −Chlorination, and −Trifluoromethylation of Alkenes
作者:Xiang Sun、Hong-Xing Ma、Tian-Sheng Mei、Ping Fang、Yulai Hu
DOI:10.1021/acs.orglett.9b00867
日期:2019.5.3
structurally diverse organohalides and CF3-containing compounds in organic synthesis, we reported a green, oxidant-free electrochemical method using undivided electrochemical cells for radical bromination, chlorination and trifluoromethylation–formyloxylation of the various alkenes with readily available halogen radical (NaCl, NaBr), trifluoromethyl radical (CF3SO2Na) sources, and DMF as formyloxylation
考虑到结构多样的有机卤化物和含CF 3的化合物在有机合成中的多功能性和价值,我们报道了一种绿色,无氧化剂的电化学方法,该方法使用未分割的电化学电池进行各种烯烃的自由基溴化,氯化和三氟甲基化-甲酰氧基化,现成的卤素自由基(NaCl,NaBr),三氟甲基自由基(CF 3 SO 2 Na)来源和DMF作为甲酰氧基化试剂。该协议在操作上是简单且坚固的和氯- ,溴-或CF 3 -直接氧化在阳极处,避免了外源化学氧化剂的需要。