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Issue 82, 2020
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Reversible dehydrogenation of a primary aryl borane

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The consecutive activation of B–H bonds in mesitylborane (H2BMes; Mes = 2,4,6-(CH3)3C6H2) by a 16-electron rhodium(I) monocarbonyl complex, (iPrNNN)Rh(CO) (1-CO; iPrNNN = 2,5-[iPr2P[double bond, length as m-dash]N(4-iPrC6H4)]2N(C4H2)) is described. Dehydrogenative extrusion of the {BMes} fragment led to the isolation of (iPrNNN)(CO)RhBMes (1-BMes). Addition of H2 gas to 1-BMes regenerated 1-CO and H2BMes, highlighting the ability of 1-CO to facilitate interconversion of {BMes} with dihydrogen. Reactivity studies revealed that 1-BMes promotes formal group transfer and that {BAr} fragments accessed by dehydrogenation are reactive entities.

Graphical abstract: Reversible dehydrogenation of a primary aryl borane

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Article information

12 Aug 2020
08 Sep 2020
First published
08 Sep 2020

Chem. Commun., 2020,56, 12323-12326
Article type

Reversible dehydrogenation of a primary aryl borane

C. S. MacNeil, S. Hsiang and P. G. Hayes, Chem. Commun., 2020, 56, 12323
DOI: 10.1039/D0CC05503D

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