Abstract
AbstractA visible‐light‐mediated reaction of N‐phenylpropynamides with diethyl 2,2‐dibromomalonate for the synthesis of bromo‐substituted azaspirotrienediones has been developed. This method allows the formation of C−Br, C−C and C=O bonds in one pot via a cascade radical addition/ipso‐cyclization/oxidation process. A possible radical mechanism involving single electron transfer and energy transfer processes is proposed based on control experiments, cyclic voltammetry determination and Stern‐Volmer quenching experiments.
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