The substituent effect of the phenylazo-group in homolytic phenylation has been measured with azobenzene as substrate and nitrobenzene as reference compound. Even after allowance for the large number of sites of substitution the phenylazo-group was shown to equal the nitro-group in its activating power. Isomer ratios and partial rate factors have been determined and are discussed.
J. Miller, D. B. Paul, L. Y. Wong and A. G. Kelso, J. Chem. Soc. B, 1970, 62 DOI: 10.1039/J29700000062
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