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Visible-Light/Nickel-Catalyzed Carboxylation of C(sp2) Bromides via Formate Activation
Gavin C Smith1, Drason H Zhang1, Wanli Zhang1
1Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States.
Abstract:
A new visible-light-driven method for the carboxylation of (hetero)aryl/vinyl bromides has been developed using catalytic 4CzIPN, nickel, phenyl triflimide, and sodium formate as a carboxylation agent. Interestingly, we found catalytic phenyl triflimide plays an essential role in promoting the reaction. While many C(sp2) carboxylation reactions require harsh reagents or gaseous carbon dioxide, we demonstrate the mild and facile construction of carboxylic acids from readily available starting materials.
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