Nickel-Catalyzed Alkenylation and Alkylation of Fluoroarenes via Activation of C−H Bond over C−F Bond
作者:Yoshiaki Nakao、Natsuko Kashihara、Kyalo Stephen Kanyiva、Tamejiro Hiyama
DOI:10.1021/ja807258m
日期:2008.12.3
Nickel/P(c-C(5)H(9))(3) (PCyp(3)) catalyst effects the addition reactions of fluoroarenes across alkynes, 1,3-dienes, and vinylarenes via the activation of C-H bonds over C-F bonds. The acidic C-H bonds located ortho to fluorine are exclusively activated to afford a range of alkenylated and alkylated fluoroarenes.
Hydrofluoroarylation of alkynes with fluoroarenes
作者:Kyalo Stephen Kanyiva、Natsuko Kashihara、Yoshiaki Nakao、Tamejiro Hiyama、Masato Ohashi、Sensuke Ogoshi
DOI:10.1039/c0dt00104j
日期:——
of both alkynes and fluoroarenes containing both electron-withdrawing and -donating groups, thus allowing efficient synthesis of a variety of substituted ethenes containing a fluoroaryl motif in high regio- and stereoselective manners. Mechanistic studies including both labeling experiments and stoichiometric reactions reveal that oxidativeaddition of C–H bonds in fluoroarenes to nickel(0) is kinetically