Cycloaddition of benzo[b]thiophene-S,S-dioxide - a route to substituted dibenzothiophenes and dibenzothiophene S,S-dioxides

摘要

Benzo[b]thiophene S,S-dioxide can be transformed by cycloaddition with tetraarylthiophene S-oxides to tetraaryldibenzothiophene S,S-dioxides. An analogous cycloaddition of benzo[b]thiophene S,S-dioxide, albeit at higher temperatures, leads directly to tetraaryldibenzothiophenes.