Reductive alkylation of p-nitroaniline with butanone over Cu–Cr–Ca/γ-Al2O3 to give N,N′-di-sec-butyl-p-phenylenediamine

Reductive alkylation of p-nitroaniline with butanone over Cu–Cr–Ca/γ-Al2O3 to give... Several Cu-based catalysts were prepared and investigated for reductive alkylation of p-nitroaniline with butanone. Performance of Cu–Cr–Ca/γ-Al2O3 was excellent. N,N’-di-sec-butyl-p-phenylenediamine was obtained in approximately 98.0 % yield under mild conditions. Results from XRD, XPS, and NH3-TPD characterization revealed that introduction of Cr remarkably improved the dispersion of Cu0 active sites whereas addition of Ca partly reduced the strong acid capacity of the catalyst. The reaction conditions, including reaction temperature and hydrogen pressure, were also optimized and the catalyst performed well for 100 h under the optimized conditions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Reductive alkylation of p-nitroaniline with butanone over Cu–Cr–Ca/γ-Al2O3 to give N,N′-di-sec-butyl-p-phenylenediamine

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Publisher
Springer Netherlands
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-013-1209-x
Publisher site
See Article on Publisher Site

Abstract

Several Cu-based catalysts were prepared and investigated for reductive alkylation of p-nitroaniline with butanone. Performance of Cu–Cr–Ca/γ-Al2O3 was excellent. N,N’-di-sec-butyl-p-phenylenediamine was obtained in approximately 98.0 % yield under mild conditions. Results from XRD, XPS, and NH3-TPD characterization revealed that introduction of Cr remarkably improved the dispersion of Cu0 active sites whereas addition of Ca partly reduced the strong acid capacity of the catalyst. The reaction conditions, including reaction temperature and hydrogen pressure, were also optimized and the catalyst performed well for 100 h under the optimized conditions.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: May 14, 2013

References

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