As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 4923-87-9, name is 5-Bromobenzothiophene. In an article，Which mentioned a new discovery about 4923-87-9, 4923-87-9.
The functionalization of thiophenes is a fundamental and important reaction. Herein, we disclose iridium-catalyzed one-pot annulation reactions of (benzo)thiophenes with (hetero)aromatic or alpha,beta-unsaturated carboxylic acids, which afford thiophene-fused coumarin-type frameworks. Dearomatization reactions of 2-substituted thiophenes with alpha,beta-unsaturated carboxylic acids deliver various thiophene-containing spirocyclic products. The occurrence of two interconnected reactions provides direct evidence for a Heck-type pathway. The mechanistic scenario described herein is distinctly different from the SEAr and concerted metalation?protodemetalation (CMD) pathways encountered in the well-described oxidative C?H/C?H cross-coupling reactions of thiophenes with other heteroarenes.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.4923-87-9. In my other articles, you can also check out more blogs about 4923-87-9
Reference：
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem