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  • 1 Niigata University Department of Chemistry and Chemical Engineering, Faculty of Engineering 950-21 Ikarashi, Niigata Japan
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In order to reveal the reactivity of toluenethiols, the hydrogen isotope exchange reaction between one of three toluenethiols (o,m, andp) and poly (vinyl alcohol) labeled with tritium was observed at 50 90°C. The reaction was analyzed with both the data obtained and theA-McKay plot method, and the following has been quantitatively clarified: (1) the reactivity order of toluenethiols is (o>(m)>(p); (2) the temperature dependences of the reactivity of toluenethiols are nearly equal; (3) the reactivity of benzenethiol is considerably decreased by the CH3 group bonded to the ortho position.