Journal
GREEN CHEMISTRY
Volume 9, Issue 6, Pages 572-576Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b614229j
Keywords
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A non-phosgene route for the synthesis of methyl N-phenyl carbamate from dimethyl carbonate and N,N'-diphenyl urea was studied under the mild conditions of atmospheric pressure. A series of homogenous and heterogenous catalysts were screened, and the homogenous catalyst sodium methoxide exhibited excellent activity in the synthesis of methyl N-phenyl carbamate under atmospheric pressure. The parameters of molar ratio of reactants, catalyst concentration, reaction time, number of additions of catalyst, reaction temperature and solvents in the synthesis of methyl N-phenyl carbamate were also investigated. A possible reaction mechanism with catalyst sodium methoxide was proposed.
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