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Hydrogenation of nitroarenes in continuous flow with TPP/Raney Ni

Hydrogenation of nitroarenes in continuous flow with TPP/Raney Ni In this work, the method of combining the various ligands with Raney Ni in continuous flow is proposed, in which triphenylphosphine (TPP) can effectively improve the chemical selectivity of anilines prepared by nitroarenes hydrogenation and maintain high activity. Meanwhile, through the analysis of ICP, FT-IR, XRD, and EDS, we have concluded that the low degree of complexation and the uniform distribution of TPP are presumed be the keys to high selectivity and activity. TPP/Raney Ni exhibits excellent tolerance to halogens and unsaturated functional groups in the continuous flow system of nitroarenes hydrogenation. Furthermore, the practicability of the continuous flow system was tested. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Flow Chemistry Springer Journals

Hydrogenation of nitroarenes in continuous flow with TPP/Raney Ni

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Publisher
Springer Journals
Copyright
Copyright © Akadémiai Kiadó 2021
ISSN
2062-249X
eISSN
2063-0212
DOI
10.1007/s41981-021-00156-3
Publisher site
See Article on Publisher Site

Abstract

In this work, the method of combining the various ligands with Raney Ni in continuous flow is proposed, in which triphenylphosphine (TPP) can effectively improve the chemical selectivity of anilines prepared by nitroarenes hydrogenation and maintain high activity. Meanwhile, through the analysis of ICP, FT-IR, XRD, and EDS, we have concluded that the low degree of complexation and the uniform distribution of TPP are presumed be the keys to high selectivity and activity. TPP/Raney Ni exhibits excellent tolerance to halogens and unsaturated functional groups in the continuous flow system of nitroarenes hydrogenation. Furthermore, the practicability of the continuous flow system was tested.

Journal

Journal of Flow ChemistrySpringer Journals

Published: Dec 1, 2021

Keywords: Continuous‐flow; TPP/Raney Ni; Preparation in flow; Hydrogenation

References