The selectivity in oxidation of a pair of associating thiols, one with R2 as a substituent, was examined in aqueous acetonitrile. The selectivity for acyclic alkyl groups (R2) differed entirely from that for the cyclohexyl and phenyl groups (R2) at 35.0 °C. The pattern of temperature dependence of the selectivity for the two similarly-shaped cyclic groups (i.e., cyclohexyl and phenyl groups) was very similar to each other.
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