The oxygenation of thieno[2,3-b]thiophenes.
Members of thieno[2,3-b]thiophenes were oxidized using the HOF.CH(3)CN complex, transforming the sulfur atom to the corresponding sulfonyl group in high yield and under very mild conditions.
Shefer
Neta
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School of Chemistry, Tel-Aviv University, Tel-Aviv 69978, Israel.
Rozen
Shlomo
S