Metal-free halogen atom transfer for carbocyclization of N-arylacrylamides enabled by visible light-excited ligated boryl radicals.

A visible light-induced, metal-free method for synthesizing 3,3-dialkylated oxindoles via boryl radical-mediated halogen atom transfer is described. This approach enables the carbocyclization of N-arylacrylamides under ambient air using an organic ph…

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