Abstract
Abstract A clean base-free α-hydroxylation of β-keto esters and amides has been developed, in which air was used as the oxygen source and SmI3 and I2 were applied as the catalysts, affording the corresponding α-hydroxylated 1,3-dicarbonyl products in good to excellent yields under mild conditions. Mechanism discussion shows that both oxygen atoms of dioxygen are utilized and incorporated into the product through a unique free-radical process.
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