Reactivity of mono- and di-methoxycarbonyl complexes of PdII towards amines and copper amine complexes: role of copper in the catalyzed palladium-copper oxidative carbonylation of amines
摘要:
The reactivity of mono- and di-methoxycarbonyl complexes of palladium of formula [PdL2Cl2-n(COOCH3)n] (n = 1 or 2; L2 = chelating ligand) towards amines in the presence of [RNH3]Cl or CuCl2 has been studied. The reactions yield N,N'-disubstituted ureas or carbamates, respectively. These results are compared with the dioxygen-induced carbonylative oxidation of amines catalyzed by palladium-based systems.