Cr-doped magnetite for the catalytic radical amination of C(sp3)–H in toluene with NH3 and H2O2

Cr-doped magnetite for the catalytic radical amination of C(sp3)–H in toluene with NH3 and H2O2 The direct catalytic amination of C(sp )–H is difficult to achieve but significant. The compound of Fe Cr O , prepared 2.35 0.65 4 by the oxidation–precipitation method, was characterized by X-ray diffraction, scanning electron microscopy, Brunauer– Emmett–Teller, X-ray photoelectron spectroscopy, and inductively coupled plasma spectrometry, and used to catalyze the decomposition of hydrogen peroxide to hydroxyl-free radical, which sequentially reacted with ammonia and toluene to produce benzylamine. Results showed that Fe Cr O with high Cr content, particularly the outside surface, could well 2.35 0.65 4 better catalyze hydrogen peroxide to hydroxyl-free radical and its transformation. Under the conditions of pH\ 6, 30 C, and the NH amount, maintaining the match of one hydroxyl-free radical one by the process control, toluene in the other phase of the reaction system was converted into benzylamine with 30% yield. The catalytic radical amination of C(sp )–H in toluene was achieved without any oriented group. Graphical abstract FeSO + CrCl 4 3 Oxidation-precipitation Cr-Fe O 3 4 NH NH + H O 3 2 2 Keywords C(sp )–H activation  Radicals  Cr-doped magnetite  Catalytic amination  Metals  Heterogeneous catalysis Introduction bonds, which broadens the synthetic approach to organic synthesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Monatshefte für Chemie - Chemical Monthly Springer Journals

Cr-doped magnetite for the catalytic radical amination of C(sp3)–H in toluene with NH3 and H2O2

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Publisher
Springer Vienna
Copyright
Copyright © 2018 by Springer-Verlag GmbH Austria, part of Springer Nature
Subject
Chemistry; Chemistry/Food Science, general; Organic Chemistry; Inorganic Chemistry; Analytical Chemistry; Physical Chemistry; Theoretical and Computational Chemistry
ISSN
0026-9247
eISSN
1434-4475
D.O.I.
10.1007/s00706-018-2140-z
Publisher site
See Article on Publisher Site

Abstract

The direct catalytic amination of C(sp )–H is difficult to achieve but significant. The compound of Fe Cr O , prepared 2.35 0.65 4 by the oxidation–precipitation method, was characterized by X-ray diffraction, scanning electron microscopy, Brunauer– Emmett–Teller, X-ray photoelectron spectroscopy, and inductively coupled plasma spectrometry, and used to catalyze the decomposition of hydrogen peroxide to hydroxyl-free radical, which sequentially reacted with ammonia and toluene to produce benzylamine. Results showed that Fe Cr O with high Cr content, particularly the outside surface, could well 2.35 0.65 4 better catalyze hydrogen peroxide to hydroxyl-free radical and its transformation. Under the conditions of pH\ 6, 30 C, and the NH amount, maintaining the match of one hydroxyl-free radical one by the process control, toluene in the other phase of the reaction system was converted into benzylamine with 30% yield. The catalytic radical amination of C(sp )–H in toluene was achieved without any oriented group. Graphical abstract FeSO + CrCl 4 3 Oxidation-precipitation Cr-Fe O 3 4 NH NH + H O 3 2 2 Keywords C(sp )–H activation  Radicals  Cr-doped magnetite  Catalytic amination  Metals  Heterogeneous catalysis Introduction bonds, which broadens the synthetic approach to organic synthesis.

Journal

Monatshefte für Chemie - Chemical MonthlySpringer Journals

Published: Feb 13, 2018

References

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