Synthesis, spectra, and reactions of some S-alkylthiophenium salts was written by Acheson, Richard M.;Harrison, Derek R.. And the article was included in Journal of the Chemical Society [Section] C: Organic in 1970.COA of Formula: C8H4Br2S This article mentions the following:
S-Alkylthiophenium, -benzo[b]thiophenium and -dibenzo[b,d]thiophenium salts were prepared by treatment of the corresponding thiophenes with alkyl halides in the presence of AgBF4 or similar reagents. Their uv spectra resemble those of the corresponding sulfoxides and sulfones, rather than those of the parent thiophene. The NMR spectrum of 3-bromo-1-ethylbenzo[b]thiophenium tetrafluoroborate and those of similar compounds show that the Et groups appear as ABX3 systems, which were computer-simulated. The S-alkyl groups are putatively not coplanar with the S-containing rings. In the mass spectrometer the S-alkyl group is very readily lost, but expansion of the thiophene ring also occurs. The salts are powerful alkylating agents. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7COA of Formula: C8H4Br2S).
2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. It has been used as a raw material for the synthesis of biologically active structures and is found in pharmaceuticals such as leukotriene synthesis inhibitors and antifungals, as well as in many natural products.COA of Formula: C8H4Br2S
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem