Abstract
A zinc-catalyzed C(sp3)-H addition of 2-alkylazaarenes to α-keto amides to furnish azaarene incorporated α-hydroxy amides has been developed with a wide range of substrates in moderate to excellent yields, respectively. Chemoselective alkylation of the keto functionality of the α-keto amides in the presence of simple ketones is the key advantage of this Zn-catalyzed transformation. This approach has been demonstrated to one gram-scale synthesis. 1H NMR and D2O exchange experimental studies reveal that the reaction proceeds through a Zn-enamide intermediate.
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