title: Alternatives to phosgene and carbon monoxide: synthesis of symmetric urea derivatives with carbon dioxide in ionic liquids.
authors.affiliation: Centre for Green Chemistry and Catalysis, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Shi
authors.forename: Youquan
authors.initials: Y
authors.lastname: Deng
authors.forename: Tianlong
authors.initials: T
authors.lastname: SiMa
authors.forename: Jiajian
authors.initials: J
authors.lastname: Peng
authors.forename: Yanlong
authors.initials: Y
authors.lastname: Gu
authors.forename: Botao
authors.initials: B
authors.lastname: Qiao