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26.1.7.1.5 Variation 5: By Iron-Catalyzed Hydration

DOI: 10.1055/sos-SD-026-00312

Figadère, B.; Franck, X.Science of Synthesis, (200526404.

Terminal alkynes are easily hydrated to the corresponding methyl ketones 6 in the presence of iron(III) complexes in dichloromethane at room temperature (Scheme 7).[‌23‌] Phen­ylacetylene gives the expected acetophenone in good yield, whereas aliphatic terminal alkynes afford the methyl ketones in moderate (ca. 50%) yields. Internal alkynes give mainly side reactions.

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