Silver-Mediated Radical Aryltrifluoromethylthiolaton of Activated Alkenes

The first example of silver-mediated oxidative aryltrifluoromethylthiolation of activated alkenes to produce valuable trifluoromethylthiole-containing oxindoles was developed. Mechanistic investigations indicated that this novel transformation proceeded through a unique F3CS center dot radical addition path, thus providing a practical and easy-handling method to generate a F3CS center dot radical in the laboratory.