Superparamagnetic Fe3O4 Nanoparticles in a Deep Eutectic Solvent: An Efficient and Recyclable Catalytic System for the Synthesis of Primary Carbamates and Monosubstituted Ureas. Issue 26 (11th July 2018)

• Record Type: Journal Article
• Authors: Inaloo, Iman Dindarloo; Majnooni, Sahar; Esmaeilpour, Mohsen
• Is Part Of: European journal of organic chemistry. Issue 26(2018)
• Page Start: 3481
• Page End: 3488
• Publication Date: 2018-07-11
• Subjects: Synthetic methods -- Green chemistry -- Nanoparticles -- Carbamates -- Ureas; Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; Bioorganic chemistry -- Periodicals; Chemistry, Physical organic -- Periodicals; 547
• DOI: 10.1002/ejoc.201800581
• Languages: English
• ISSNs: 1434-193X

Abstract

Abstract : Superparamagnetic Fe3 O4 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. Abstract : Superparamagnetic Fe3 O4 nanoparticles were used to prepare 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. (MNP = magnetite nanoparticles, Ch = choline)