Issue 10, 2010
From the journal:

Green Chemistry

Synthesis of urea derivatives from amines and CO2 in the absence of catalyst and solvent†

Chaoyong Wu,ab   Haiyang Cheng,ab   Ruixia Liu,ab   Qiang Wang,ab   Yufen Hao,ab   Yancun Yua  and  Fengyu Zhao*a  

* Corresponding authors

a Sate Key Laboratory of Electroanalytical Chemistry, Laboratory of Green Chemistry and Process, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, P. R. China

b Graduate university of the Chinese Academy of Sciences, Beijing, P. R. China

Abstract

Urea derivatives are obtained in mild to good yield from the reactions of primary aliphatic amines with CO2 in the absence of any catalysts, organic solvents or other additives. To optimize reaction conditions, experimental variables including temperature, pressure, the concentration of amine, reaction time etc. were studied. Satisfactory yields were obtained at the optimized conditions that are comparable to the presence of catalyst and solvent. The preliminary investigation of the reaction mechanism showed that alkyl ammonium alkyl carbamate was quickly formed as the intermediate, and then the final product was formed by the intramolecular dehydration.

Graphical abstract: Synthesis of urea derivatives from amines and CO2 in the absence of catalyst and solvent

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Article information

DOI
https://doi.org/10.1039/C0GC00059K
Article type
Paper
Submitted
29 Apr 2010
Accepted
12 Aug 2010
First published
13 Sep 2010

Green Chem., 2010,12, 1811-1816

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Synthesis of urea derivatives from amines and CO2 in the absence of catalyst and solvent

C. Wu, H. Cheng, R. Liu, Q. Wang, Y. Hao, Y. Yu and F. Zhao, Green Chem., 2010, 12, 1811 DOI: 10.1039/C0GC00059K

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