Preparation of 4,7-dibromobenzo[b]thiophene as a versatile building block and synthetic application to a bis(ethynylthienyl)oligoarene system was written by Yamamoto, Takuya;Katsuta, Hiroshi;Toyota, Kozo;Iwamoto, Takeaki;Morita, Noboru. And the article was included in Bulletin of the Chemical Society of Japan in 2012.COA of Formula: C4H9NaS This article mentions the following:
Benzo[b]thiophene, 4,7-dibromobenzo[b]thiophene, thieno[3,2-b]thiophene, and 3-bromothieno[3,2-b]thiophene were prepared by AuCl-catalyzed cyclization of (tert-butylsulfanyl)(ethynyl)benzenes or (tert-butylsulfanyl)(ethynyl)thiophenes. Several reactions of 4,7-dibromobenzo[b]thiophene were investigated, including metalation and cross coupling reactions. In the experiment, the researchers used many compounds, for example, Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2COA of Formula: C4H9NaS).
Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.COA of Formula: C4H9NaS
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts