Oxidative coupling of thiols in solution and under solvent-free conditions
作者:Farhad Shirini、Mohammad A. Zolfigol、Mahroo Khaleghi
DOI:10.1070/mc2004v014n01abeh001831
日期:2004.1
A mild and efficient method for the oxidative coupling of thiols by ammonium dichromate in the presence of silica chloride and wet SiO2 in solution and under solvent free conditions is reported.
The title compound oxidized thiols to disulfides, sulfides to sulfoxides, hydroquinone or catechol to benzoquinones, and phosphine to phosphine oxide in high yields under very mild conditions. In addition, it functioned as a useful reagent for the syntheses of 1,2,4-thiadiazole derivatives from thioureas or thioamides.