Chen W, Zhang X, Wang X, Zhang E, Wang ZL, Jia J. Synthesis of α-ketoamides
via oxidative amidation of diazo compounds with
O-benzoyl hydroxylamines as nitrogen source and the oxidant.
Org Biomol Chem 2024;
22:6708-6712. [PMID:
39118467 DOI:
10.1039/d4ob00883a]
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Abstract
A simple, efficient method has been described for the construction of an array of α-ketoamides from readily available O-benzoyl hydroxylamines and diazo compounds as starting materials. There was a combined use of CuI as a catalyst and H2O as the oxygen source. The investigation reveals that the O-benzoyl hydroxylamines serve a dual role as both an amine source and the oxidant in this mechanism, thereby obviating the need for additional oxidants in the transformation process. This methodology could give a wider range of products in good to excellent yields for most substrates, and thus, we provide a new idea for the synthesis of α-ketoamides.
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