Amphiphilic aryl
radicals generated upon visible light irradiation
of arylazo sulfones have been exploited in the development of a solventylation
strategy via hydrogen atom transfer (HAT). The present protocol succeeded
in the versatile functionalization of various olefins with carbon-centered
radicals deriving from acetone, acetonitrile, chloroform, methylene
chloride, nitromethane, methyl acetate, and methyl formate under metal-
and photocatalyst-free conditions. The direct addition of the aryl
radicals onto the olefin substrates was suppressed under high dilution
conditions.
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