How is (4-Bromo-phenyl)-(3-chloro-1H-indol-7-yl)-methanone (CAS: 91714-51-1) typically synthesized?

(4-Bromo-phenyl)-(3-chloro-1H-indol-7-yl)-methanone can be synthesized through a multi-step reaction starting from bromobenzene and 3-chloro-1H-indole. The process involves the formation of the bromophenyl group followed by the coupling with the indole ring. Common catalysts include palladium-based catalysts, and the reaction is typically carried out under microwave conditions to improve yield and selectivity. The overall yield is around 75-85%.