Copper-Mediated Radical 1,2-Bis(trifluoromethylation) of Alkenes with Sodium Trifluoromethanesulfinate
作者:Bin Yang、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1021/acs.orglett.5b00601
日期:2015.4.17
An efficient chemoselective 1,2-bis(trifluoromethylation) of alkenes with CF3SO2Na promoted by t-BuOOH/CuCl was developed. This protocol provided the first convenient preparation of 1,2-bis(trifluoromethylated) compounds by the vicinal difunctionalization of alkenes. The chemoselectivity of this reaction was accomplished by increasing the concentration of the CF3 radical.
开发了由t- BuOOH / CuCl促进的具有CF 3 SO 2 Na的烯烃的高效化学选择性1,2-双(三氟甲基化)烯烃。该方案通过烯烃的邻位双官能化提供了第一种方便的1,2-双(三氟甲基化)化合物的制备方法。该反应的化学选择性通过增加CF 3基的浓度来实现。
Tailoring the Reactivity of the Langlois Reagent and Styrenes with Cyanoarenes Organophotocatalysts under Visible‐Light
作者:Dan Louvel、Amel Souibgui、Alexis Taponard、Jean Rouillon、Mongi ben Mosbah、Younes Moussaoui、Guillaume Pilet、Lhoussain Khrouz、Cyrille Monnereau、Julien C. Vantourout、Anis Tlili
DOI:10.1002/adsc.202100828
日期:2022.1.4
reduction or the dimerization of the radical intermediate generated after initial addition of the fluoroalkyl radical to the styrene. The versatility of the developed system is also extended to encompass radical-radical cross-coupling as exemplified here using cyanopyridine. Mechanistic investigations including luminescence and EPR spectroscopy allow to shed light on the different mechanisms.
Unusual reactions resulting from the addition on olefins of trifluoromethyl radicals obtained from dissociative electron transfer between electrochemically generated aromatic anion radicals and trifluoromethyl bromide
作者:Claude P. Andrieux、Laurence Gelis、Jean-Michel Saveant
DOI:10.1016/s0040-4039(01)80554-2
日期:1989.1
Dissociative electron transfer between the anion radical of terephthalonitrile and CF3Br in the presence of olefinic compounds results in the formation of an addition radical which eventually dimerizes into 1,1,1,6,6,6-hexafluoro-3,4-diphenyl hexane, in the case of styrene. The same reaction carried out with the same anion radical and butyl vinyl ether yields 4-(1-trifluoromethyl-2-n-butyloxyethyl)benzonitrile