Difluoro-and Trifluoromethylation of Electron-Deficient Alkenes in an Electrochemical Microreactor
News Apr 11, 2014
Electrochemical microreactors, which have electrodes integrated into the flow path, can afford rapid and efficient electrochemical reactions without redox reagents due to the intrinsic properties of short diffusion distances. Taking advantage of electrochemical microreactors, Kolbe electrolysis of di-and trifluoroacetic acid in the presence of various electron-deficient alkenes was performed under constant current at continuous flow at room temperature. As a result, di-and trifluoromethylated compounds were effectively produced in either equal or higher yields than identical reactions under batch conditions previously reported by Uneyamas group. The strategy of using electrochemical microreactor technology is useful for an effective fluoromethylation of alkenes based on Kolbe electrolysis in significantly shortened reaction times.
The article is published online in ChemistryOpen and is free to access.
The 2018 IUPAC-ThalesNano prize has been awarded to Professor C. Oliver Kappe. Prof. Kappe has made an extremely high impact on the development of flow chemistry and contributed to the penetration of continuous processes worldwide from the academia to fine-chemical and pharma industry.READ MORE