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Eine iridiumkatalysierte regioselektive asymmetrische Hydroalkinylierung von Enamiden an der β‐Position stellen B.‐J. Li et al. in der Zuschrift auf S. 9153 ff. vor. Sie liefert auf einfache Weise chirale Homopropargylamide mit einem Stereozentrum β zum Amid. Wie im Titelbild veranschaulicht, vereinigen sich Enamid und Alkin sehr schnell zu einem chiralen Produkt.
Reported is an iridium‐catalyzed asymmetric hydroalkynylation of enamides with terminal alkynes. The reaction occurs regioselectively at the β‐position of an enamide to produce homopropargyl amides. Good to high enantioselectivity was observed with an iridium complex ligated by a chiral bis(phosphine) ligand. This method provides a straightforward route to synthesize chiral homopropargyl amides with...
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