☆ 4.4 Article

Deep Eutectic Solvents (DES) as Green and Efficient Solvent/Catalyst Systems for the Synthesis of Carbamates and Ureas from Carbonates

CHEMISTRYSELECT (2019)

期刊

CHEMISTRYSELECT

卷 4, 期 27, 页码 7811-7817

出版社

WILEY-V C H VERLAG GMBH

DOI: 10.1002/slct.201901567

关键词

Carbamates; Ureas; Carbonates; Deep eutectic solvent (DES); Zinc (II) chloride

类别

Chemistry, Multidisciplinary

资金

research council of Shiraz University

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Reagent

摘要

The use of sustainable deep eutectic solvents (DESs) as stable and green solvent/catalyst systems shows unprecedented high efficiency in the formation of carbamates and ureas from carbonates without any additional solvent. This new protocol provides a simple, fast, economically and eco-friendly method for the synthesis of broad scope carbamates and ureas providing remarkable yields in the presence of choline chloride:Zinc(II) chloride ([ChCl][ZnCl2](2)) under the mild reaction conditions. Moreover, the [ChCl][ZnCl2](2) can be reused for over five consecutive cycles without any significant loss of activity.

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