硫化モリブデン触媒を用いた安息香酸類の水素-硫化水素による還元

抄録

Benzoic acids and sulfur were allowed to react under the initial hydrogen pressure 100 kg/cm² at 250°C in the presence of MoS₃. Toluene and a little amount of α-toluenethiol were obtained. Similar results were also obtained from substituted benzoic acids, but in the case of benzoic acids containing electron-donating group the corresponding thiols were not obtained, the resulting compounds were mainly products of decarboxylation. In the case of phthalic anhydride, thiophthalide was obtained in good yield under the same reaction conditions. Depending on the conditions, thiophthalic anhydride and o-xylene sulfide were obtained in good yield respectively.