Abstract

Metal-catalyzed cross-coupling reactions for indoles are reviewed. Palladium-catalyzed cross-coupling reactions are the most widely explored and applied of all metal-catalyzed cross-coupling reactions. Applications of Kumada coupling, Negishi coupling, Suzuki coupling, Stille coupling, Sonogashira reaction, the Heck reaction, carbonylation, and C–N bond formation reactions in indoles are summarized. In addition, other transition metal-catalyzed cross-coupling reactions using copper, rhodium, iron, and nickel in indole synthesis are also discussed.

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