Synthesis of imidazolidin-2-ones employing dialkyl carbonates as an ecofriendly carbonylation source

Abstract

A new approach to the synthesis of imidazolidin-2-ones by carbonylation of vicinal diamines with dialkyl carbonates using Pb(NO₃)₂ and Cu(II) salts as catalysts has been described in the present protocol. A comparative study using Cu(II) salts and Pb(NO₃)₂ as catalysts has suggested Cu(NO₃)₂ and CuCl₂·2H₂O salts to be as promising as Pb(NO₃)₂ and can replace the latter in the carbonylation reactions employing dialkyl carbonates.