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8785450 
Journal Article 
Hydrogen sulfide in reactions of nucleophilic substitution of hydroxy groups in aromatic alcohols 
Okhlobystina, AV; Okhlobystin, AO; Berberova, N; Burmistrova, DA 
2018 
1 
Izvestiya Vysshikh Uchebnykh Zavedenii. Khimiya i Khimicheskaya Tekhnologiya
ISSN: 0579-2991 
61 
9-10 
36-41 
English 
Most of the known methods for the preparation of aromatic thiols are based on nucleophilic substitution reactions in halogenated aromatic hydrocarbons using sodium thiolate, thiourea, or potassium xanthate as nucleophilic reagents at high temperatures, pressure and in the presence of catalysts. This work is the first to study the reactions of direct nucleophilic substitution of OH groups in phenols, pyrocatechols, and benzyl alcohol by the HS group under the conditions of one-electron reduction of hydrogen sulfide in acetonitrile and an ionic liquid of the pyridinium type. The proposed reactions take place at room temperature and atmospheric pressure. The use of a "green" solvent - an ionic liquid - cuts the synthesis time by half, increases the environmental friendliness of the process and reduces the consumption of reagents. 
hydrogen sulfide; thiophenol; 1;2-dithiophenol; pyrocatechol; nucleophilic substitution; electrochemical synthesis