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Alternatives to Phosgene and Carbon Monoxide: Synthesis of Symmetric Urea Derivatives with Carbon Dioxide in Ionic Liquids
Author(s) -
Shi Feng,
Deng Youquan,
SiMa Tianlong,
Peng Jiajian,
Gu Yanlong,
Qiao Botao
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200351098
Subject(s) - phosgene , ionic liquid , carbon monoxide , urea , carbon dioxide , chemistry , catalysis , ionic bonding , inorganic chemistry , electrochemical reduction of carbon dioxide , organic chemistry , ion
Simple, clean, safe, reproducible, and practical describes the synthesis of disubstituted urea derivatives, which are effectively synthesized from amines and carbon dioxide with a CsOH/ionic‐liquid catalyst system. The products are easily separated and the catalytic system can be reused without deactivation (see picture).