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Issue 9, 2020
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Hydrodehalogenation of organohalides by Et3SiH catalysed by group 4 metal complexes and B(C6F5)3

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Abstract

Catalytic hydrodehalogenation (HDH) of aliphatic organohalides such as trifluorotoluenes by Et3SiH proceeds in the presence of readily available group 4 metal compounds: Cp′2MX2 (Cp′ = η5-C5H5 or η5-C5Me5; X = F, Cl, or Me; M = Ti, Zr, or Hf), CpTiCl3 and TiCl4 with a catalytic amount of B(C6F5)3. The use of metallocenes in combination with the borane activator leads to a better selectivity of the reaction, i.e., suppression of Friedel–Crafts alkylations of arenes.

Graphical abstract: Hydrodehalogenation of organohalides by Et3SiH catalysed by group 4 metal complexes and B(C6F5)3

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Article information


Submitted
31 Jan 2020
Accepted
05 Feb 2020
First published
05 Feb 2020

Dalton Trans., 2020,49, 2771-2775
Article type
Communication

Hydrodehalogenation of organohalides by Et3SiH catalysed by group 4 metal complexes and B(C6F5)3

D. Dunlop, J. Pinkas, M. Horáček, N. Žilková and M. Lamač, Dalton Trans., 2020, 49, 2771
DOI: 10.1039/D0DT00360C

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