Hits:
Indexed by:期刊论文
Date of Publication:2009-01-01
Journal:GREEN CHEMISTRY
Included Journals:SCIE、Scopus
Volume:11
Issue:9
Page Number:1397-1400
ISSN No.:1463-9262
Abstract:Nitroarenes are reduced to the corresponding N-arylhydroxylamines with high selectivity using Zn dust in a CO2/H2O system under mild conditions. The yield of N-phenylhydroxylamine from nitrobenzene is 88% when the reaction is carried out at 25 degrees C for 1.5 hours with a Zn to nitrobenzene molar ratio equal to 3 under 0.1 MPa CO2. Other nitroarenes, which contain reducible functionality other than a nitro group, are also reduced to the corresponding N-arylhydroxylamines with yield from 88% to 99%. The process fully removes the need to use NH4Cl and is environmentally benign.