Journal
CHEMISTRYSELECT
Volume 4, Issue 27, Pages 7811-7817Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201901567
Keywords
Carbamates; Ureas; Carbonates; Deep eutectic solvent (DES); Zinc (II) chloride
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Funding
- research council of Shiraz University
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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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