Mechanistic Study Of The Titanocene(Iii)-Catalyzed Radical Arylation Of Epoxides
CHEMISTRY-A EUROPEAN JOURNAL(2015)
摘要
An atom-economical and catalytic arylation of epoxide-derived radicals is described. The key step of the catalytic system is a sequential electron and proton transfer for the rearomatization of the radical sigma-complex and catalyst regeneration. Kinetic, computational, spectroscopic, and cyclovoltammetric investigations highlight the key issues of the reaction mechanism and catalyst stabilization by collidine hydrochloride. Studies employing radicophiles rule out the participation of cations as reactive intermediates.
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关键词
arylation,cyclic voltammetry,DFT,epoxides,radicals,titanium
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