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. 2024 Apr 30;20:973–1000. doi: 10.3762/bjoc.20.87

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Copyright © 2024, De Salvo et al.

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Scheme 40 — The direct Sonogashira carbonylation coupling reaction of indoles and alkynes via Pd/CuI catalysis reported by Li et al. [71] (top). The Pd-catalyzed regio- and chemoselective direct coupling of indoles/CO/alkynyl carboxylates developed by Zeng and Alper [72] (bottom).