How is 6-bromo-4-fluoro-1H-indole (CAS: 885520-59-2) typically synthesized?

6-Bromo-4-fluoro-1H-indole (CAS: 885520-59-2) can be synthesized through a multistep process involving the bromination of 4-fluoro-1H-indole followed by further functional group modifications. Common synthetic methods include the use of N-bromosuccinimide (NBS) for bromination under UV light, with selectivity towards the indole ring. The overall yield of the final product is generally around 70-80%, depending on the purity of starting materials and reaction conditions.