Hydrotrifluoromethylation of Unactivated Alkenes and Alkynes Enabled by an Electron-Donor–Acceptor Complex of Togni’s Reagent with a Tertiary Amine
作者:Yuanzheng Cheng、Shouyun Yu
DOI:10.1021/acs.orglett.6b01301
日期:2016.6.17
and a tertiary amine has been introduced. The existence of this EDA complex was supported by NMR titration experiments. The hydrotrifluoromethylation of unactivated aliphatic alkenes and alkynes enabled by this EDA complex has also been developed. This hydrotrifluoromethylation protocol is operationally simple and promoted by a tertiary amine.
Mn(OAc)<sub>3</sub>-Mediated Hydrotrifluoromethylation of Unactivated Alkenes Using CF<sub>3</sub>SO<sub>2</sub>Na as the Trifluoromethyl Source
作者:Bin Cui、Hui Sun、Yibo Xu、Lin Li、Lili Duan、Yue-Ming Li
DOI:10.1021/acs.joc.8b00633
日期:2018.6.1
A simple and efficient method for hydrotrifluoromethylation of unactivated alkenes was reported. The reaction relied on the single electron oxidation of a commercially available sodiumtrifluoromethanesulfinate (CF3SO2Na, Langlois’ reagent) using Mn(OAc)3·2H2O as the oxidant and the subsequent addition of trifluoromethyl radical to C═C double bonds. The reaction proceeded readily under mild conditions
报道了一种简单有效的未活化烯烃加氢三氟甲基化的方法。该反应依赖于使用Mn(OAc)3 ·2H 2 O作为氧化剂的市售三氟甲烷亚磺酸钠(CF 3 SO 2 Na,Langlois试剂)的单电子氧化,随后将三氟甲基自由基加到C═Cdouble债券。反应在温和条件下容易进行,并且对底物中的各种官能团具有良好的耐受性。通过氘化,自由基钟和TEMPO抑制实验研究了初步反应机理。