Journal of Catalysis

Carbomethoxylating reactivity of methyl phenyl carbonate toward aromatic amines in the presence of group 3 metal (Sc, La) triflate catalysts

M Distaso, E Quaranta

Index: Distaso, Monica; Quaranta, Eugenio Journal of Catalysis, 2004 , vol. 228, # 1 p. 36 - 42

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Citation Number: 25

Abstract

Methyl phenyl carbonate (MPC) has been investigated as a carbomethoxylating agent of aromatic amines in the presence of group 3 metal (Sc or La) triflate catalysts. Under mild conditions (363 K), both Sc (OTf) 3 and La (OTf) 3 (OTf= O3SCF3) can promote the carbamation of aniline and a few industrially relevant aromatic diamines, such as 4, 4′- methylenedianiline (MDA) and 2, 4-diaminotoluene (TDA), with MPC. Carbamate yield ...