Lewis Acid Promoted Single C-F Bond Activation of the CF 3 Group: S N 1'-Type 3,3-Difluoroallylation of Arenes with 2-Trifluoromethyl-1-alkenes

Lewis Acid Promoted Single C-F Bond Activation of the CF 3 Group: S N 1'-Type 3,3-Difluoroallylation of Arenes with 2-Trifluoromethyl-1-alkenes

Activation of the sp C-F bond in 2-trifluoromethyl-1-alkenes was accomplished through treatment with a Lewis acid. In the presence of an equimolar amount of EtAlCl , the (trifluoromethyl)alkenes readily underwent an S 1'-type reaction with arenes through a Friedel-Crafts-type mechanism via elim...

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Veröffentlicht in:Angewandte Chemie International Edition 2017-05, Vol.56 (21), p.5890-5893
Hauptverfasser: Fuchibe, Kohei, Hatta, Hibiki, Oh, Ken, Oki, Rie, Ichikawa, Junji
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Hatta, Hibiki
Oh, Ken
Oki, Rie
Ichikawa, Junji
description Activation of the sp C-F bond in 2-trifluoromethyl-1-alkenes was accomplished through treatment with a Lewis acid. In the presence of an equimolar amount of EtAlCl , the (trifluoromethyl)alkenes readily underwent an S 1'-type reaction with arenes through a Friedel-Crafts-type mechanism via elimination of a fluoride ion to afford 3,3-difluoroallylated arenes in good yields. This selective activation of one C-F bond of the CF group provides a synthetic method for accessing biologically and synthetically important 1,1-difluoro-1-alkenes.
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title Lewis Acid Promoted Single C-F Bond Activation of the CF 3 Group: S N 1'-Type 3,3-Difluoroallylation of Arenes with 2-Trifluoromethyl-1-alkenes
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