Aqueous high-temperature chemistry of carbo- and heterocycles. 28. Reactions of aryl sulfoxides and sulfones in sub- and supercritical water at 200-460 deg.C

摘要

Diphenyl and methyl phenyl sulfones nd sulfoxides and dibenzothiophen sulfone were treated at 460 deg.C with water, 15/100 aqueous formic acid, and 15/100 aqueous sodium formate. Thermal comparisons were run in cyclohexane, and for those compounds and conditions that resulted in fast conversion after 7 min at 460 deg.C, also at lower temperatures. Sulfoxides are highly reactive, sulfones less so. Reactivity is greatest in 15/100 aqueous sodium formate followed by formic acid for the sulfones; this reactivity order is inverted for the sulfoxides.