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Synthesis of certain 5-substituted thieno[2,3-b]thiophene-2-sulfonamides and thieno[2,3-b]thiophene-2-sulfonamide 6,6-dioxides

โœ Scribed by Hwang-Hsing Chen; Jesse A. May; Vincent M. Lynch

Publisher
Journal of Heterocyclic Chemistry
Year
1999
Tongue
English
Weight
669 KB
Volume
36
Category
Article
ISSN
0022-152X

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โœฆ Synopsis

A series of the title compounds were prepared for evaluation as inhibitors of carbonic anhydrase II. Oxidation of 5-substituted thieno[2,3-b]thiophene-2-sulfonamides provided the first examples of thiophene[2,3-b]thiophene-2-sulfonamide 6,6-dioxides. These cyclic vinyl sulfones readily underwent addition to give predominately that 4,5-cis addition product.

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