Organic letters

Lanthanum (III) isopropoxide catalyzed chemoselective transesterification of dimethyl carbonate and methyl carbamates

M Hatano, S Kamiya, K Moriyama, K Ishihara

Index: Hatano, Manabu; Kamiya, Sho; Moriyama, Katsuhiko; Ishihara, Kazuaki Organic Letters, 2011 , vol. 13, # 3 p. 430 - 433

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Citation Number: 19

Abstract

A practical transesterification of less reactive dimethyl carbonate and much less reactive methyl carbamates with primary (1°), secondary (2°), and tertiary (3°) alcohols was established with the use of a lanthanum (III) complex, which was prepared in situ from lanthanum (III) isopropoxide (3 mol%) and 2-(2-methoxyethoxy) ethanol (6 mol%). In particular, corresponding carbonates and carbamates obtained were of synthetic utility ...