Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2018, Issue 26, Pages 3481-3488Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.201800581
Keywords
Synthetic methods; Green chemistry; Nanoparticles; Carbamates; Ureas
Categories
Funding
- Research Council of Shiraz University
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Superparamagnetic Fe3O4 nanoparticles were used to synthesize various primary carbamates as well as monosubstituted and N,N-disubstituted ureas. This efficient phosgene-free process used urea as an eco-friendly carbonyl source in the presence of a biocompatible deep eutectic solvent (DES) to provide an inexpensive and attractive route that afforded the products in moderate to excellent yields. The employed DES serves both a catalytic role and as the green reaction medium. The magnetic nanocatalyst and DES can been reused several times without a significant loss of activity.
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