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Indexed by:期刊论文

Date of Publication:2012-11-01

Journal:RESEARCH ON CHEMICAL INTERMEDIATES

Included Journals:SCIE、EI、Scopus

Volume:38

Issue:9

Page Number:2471-2478

ISSN No.:0922-6168

Key Words:Nitroarenes; Reduction; Zn; CO2-H2O; Ultrasound; N-Arylhydroxylamines

Abstract:The promoting effect of ultrasound on the selective reduction of nitroarenes to N-arylhydroxylamines by use of Zn in an environmentally benign CO2-H2O system has been demonstrated. The yield of N-phenylhydroxylamine reaches 95 % when the reaction is carried out with a Zn-to-nitrobenzene molar ratio of 2.2 under ultrasound (40 kHz) at 25 A degrees C and normal pressure of CO2 for 60 min. Application of ultrasound to the reaction has the advantages of higher yield of N-arylhydroxylamines, shorter reaction time, and consumption of less Zn.