Aromatic compounds diphenyl sulfoxide

The reaction was carried out on numerous aromatic and aliphatic sulfides and sulfoxides. Among the compounds made in essentially quantitative yields were dibenzyl sulfoxide, dibenzyl sulfone, dimethyl sulfone, diphenyl sulfoxide, thionyldiglycolic acid, and carboxymethylthionylsuccinic acid (Table I). 

Synthesis of aromatic sulfoxides is usually effected preparatively by one of the two following methods. First, aromatic compounds can be treated with thionyl chloride under Friedel-Crafts conditions di-p-tolyl sulfoxide has thus been obtained from toluene,232 diphenyl sulfoxide from benzene,233,234 and bis-Q -hydroxyphenyl) sulfoxide from phenol.235... 

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