3-Bromobenzo[b]thiophene (CAS 7342-82-7) is a heterocyclic building block featuring a bromine substituent at the 3-position of the benzothiophene core, making it a highly versatile intermediate for cross-coupling reactions such as Suzuki-Miyaura, Heck, and Sonogashira couplings. This compound is widely employed in medicinal chemistry research for synthesizing bioactive molecules, as the benzothiophene scaffold is prevalent in anti-inflammatory, antimicrobial, and anticancer agents. It also finds application in the development of functional organic materials, including organic semiconductors, OLED components, and sulfur-based chemical sensors.
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