Issue 22, 2019

Delineating the critical role of acid additives in Mn-catalysed C–H bond functionalisation processes

Abstract

Addition of co-catalytic Cy2NH to Mn-catalysed C–H bond activation reactions suggests that the conjugate acid, Cy2NH2X, influences catalysis. Here, acids are shown to positively influence C–H bond alkenylation catalysis involving alkynes. For certain types of alkynes an acid additive is critical to catalysis. In stark contrast, acids retard catalysis involving acrylates. [Cy2NH2]X salts also play a key role in thwarting catalyst degradation to manganese clusters. Our findings enable unreactive substrates to be alkenylated.

Graphical abstract: Delineating the critical role of acid additives in Mn-catalysed C–H bond functionalisation processes

Supplementary files

Article information

Article type
Communication
Submitted
10 jan 2019
Accepted
18 feb 2019
First published
26 feb 2019

Chem. Commun., 2019,55, 3211-3214

Delineating the critical role of acid additives in Mn-catalysed C–H bond functionalisation processes

L. A. Hammarback, A. Robinson, J. M. Lynam and I. J. S. Fairlamb, Chem. Commun., 2019, 55, 3211 DOI: 10.1039/C9CC00257J

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