Ghochikyan, T. V. et al. published their research in Russian Journal of Organic Chemistry in 2017 | CAS: 6287-82-7

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.Formula: C8H4Br2S

Sonogashira reaction of 5-substituted 3-(prop-2-yn-1-yl)oxolan-2-ones was written by Ghochikyan, T. V.;Samvelyan, M. A.;Galstyan, A. S.;Gevorgyan, A.;Vardanyan, G.;Grigoryan, T.;Langer, P.. And the article was included in Russian Journal of Organic Chemistry in 2017.Formula: C8H4Br2S This article mentions the following:

Palladium-catalyzed cross-coupling of 5-methyl- and 5,5-dimethyl-3-(prop-2-yn-1-yl)oxolan-2-ones with dihaloarenes (dihaloheteroarenes) gave mixtures of the corresponding mono-coupling products I (R = H, Me; R1 = 2-BrC6H4, 4-Br-2-F3CC6H3, 4-bromothiophen-3-yl, etc.) and bis-coupling products II (X = 1,3-C6H4, 2-CF3-1,4-C6H3, thiophene-3,5-diyl, etc.). The latter can be obtained as the major products by variation of the catalytic system. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Formula: C8H4Br2S).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.Formula: C8H4Br2S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem