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
The reactivity of mono- and di-methoxycarbonyl complexes of palladium of formula (n = 1 or 2; L2 = chelating ligand) towards amines in the presence of 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. Key words: Palladium; Copper; Carbonylation; Amine; Urea; Carbamate
Methylchloroformate synthesis via direct interaction of palladium di(methoxycarbonyl) complexes with CuCl2: utilization in the synthesis of carbonates and carbamates
ClCOOCH3 has been obtained in very good yield by reaction of (L2 = 2,2'-bipyridine (bipy) or 1,10-phenanthroline (phen)> with CuCl2.The in situ reaction of ClCOOCH3 with alcohols or amines produces carbonates or carbamates.