Green and Practical Synthesis of Carbamates from Ureas and Organic Carbonates |
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| Authors: | Xiaoguang Guo Jianpeng Shang Jian Li Liguo Wang Yubo Ma |
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| Institution: | 1. Centre for Green Chemistry and Catalysis, Lanzhou Institute of Chemical Physics, Chinese Academy of Science , Lanzhou , China;2. Graduate School of the Chinese Academy of Sciences , Beijing , China |
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| Abstract: | A practical method for the synthesis of carbamates from ureas and organic carbonates was developed with 100% atom economy using La2O3/SiO2 as catalyst without any additional solvent. The scope of the protocol is demonstrated in the synthesis of 14 carbamates with various functional groups in excellent yields (76–95%).  Additional information ACKNOWLEDGMENTS This work has been financially supported by the National Natural Science Foundation of China (No. 20503037). We thank Bayer Material Science for financial support. |
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| Keywords: | Atom economy carbamates carbonates clean synthesis lanthana urea derivatives |
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