Oxidative nitroalkylation of β-ketoamides and nitroalkanes, mediated by hypoiodide generated from tert-butyl hydrogen peroxide and a catalytic amount of guanidinium iodide, afforded the corresponding α-nitroalkyl-β-ketoamides in up to 97% yield.
The first catalytic intermolecular oxidative cross‐coupling reaction between two different carbonyl compounds was achieved by using cumenehydroperoxide as an environmentally friendly, mild oxidant in the presence of a cyclic guanidinium hydroiodide derivative as a catalyst. Cross‐coupling reaction between variouβ ketoamides and oxindoles took place smoothly, and the corresponding 1,4‐dicarbonyl compounds
facile, economical and environmentally friendly strategy has been developed for the α-hydroxylation of β-ketoesters and β-keto amides with peroxides via radical cross-coupling reaction in water under open-air conditions. This protocol allows a convenient access to various α-hydroxy-β-keto esters and α-hydroxy-β-keto amides with up to 92% yield (34 examples). Moreover, the reaction was successfully