Highly efficient synthesis of cyclic ureas from CO 2 and diamines by a pure CeO 2 catalyst using a 2-propanol solvent

M Tamura, K Noro, M Honda, Y Nakagawa…

Index: Green Chemistry, , vol. 15, # 6 p. 1567 - 1577

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Citation Number: 34

Abstract

... these compounds, ureas are an important class of carbonyl compounds and useful chemical intermediates in ... As above, there is no green system that can achieve satisfactory yields of cyclic ureas ... the reactions were carried out in an autoclave reactor with an inner volume of 190 ...