Photolysis of phenylazo p-tolyl sulfone and p-chlorophenylazo p′-tolyl sulfone in aromatic solvents at room temperature was investigated. The products were analyzed, and the isomer distribution and partial rate factors in arylation of mono-substituted benzenes were determined. The results indicate that the photolysis involves formation of aryl radicals and p-tolylsulfonyl radicals.
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