Sonochemical oxidative-coupling of formamides with 1,3-dicarbonyl compounds in the corresponding
carbamates by CuO nanoparticles as a catalyst and tert-butyl hydroperoxide (TBHP) as an
oxidant has been reported. Various derivatives of enol carbamates were synthesized with good to high
yields under the optimized reaction conditions. Compared with conventional methods, the main advantage
of this method is mild conditions.
Keywords: Ultrasound, oxidative-coupling, carbamates, CuO nanoparticles, TBHP, formamides.
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