One-carbon-unit insertion into carbon-halogen (C-X) bonds accompanied by the formation of a new C-X bond and carbon-chain elongation is a powerful synthetic method of complex organohalides. Herein, we developed an… Click to show full abstract
One-carbon-unit insertion into carbon-halogen (C-X) bonds accompanied by the formation of a new C-X bond and carbon-chain elongation is a powerful synthetic method of complex organohalides. Herein, we developed an indium trihalide catalyzed formal insertion of diazo esters into a C-X (X = Cl, Br, I) bond. In the present system, the reactions of α-aryl diazo esters with benzylic chlorides, bromides, and iodides yielded α-chloro, α-bromo, and α-iodo esters, respectively.
               
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