Issue 15, 2017

Et3GeH versus Et3SiH: controlling reaction pathways in catalytic C–F bond activations at a nanoscopic aluminum chlorofluoride

Abstract

Catalytic C–F bond activation reactions of mono- and polyfluoroalkanes at Lewis acidic amorphous aluminum chlorofluoride (ACF) are presented. The hydrogen sources Et3GeH or Et3SiH control the selectivity of the conversions. The immobilization of Et3GeH at ACF resulted in catalytic dehydrohalogenation reactions to yield olefins under very mild conditions. In contrast, if Et3SiH is immobilized at ACF, C–C coupling occured and the formation of Friedel–Crafts products was observed. MAS NMR spectroscopic studies revealed information about the surface binding of the substrates.

Graphical abstract: Et3GeH versus Et3SiH: controlling reaction pathways in catalytic C–F bond activations at a nanoscopic aluminum chlorofluoride

Supplementary files

Article information

Article type
Paper
Submitted
29 4 2017
Accepted
01 7 2017
First published
18 7 2017

Catal. Sci. Technol., 2017,7, 3348-3354

Et3GeH versus Et3SiH: controlling reaction pathways in catalytic C–F bond activations at a nanoscopic aluminum chlorofluoride

G. Meißner, D. Dirican, C. Jäger, T. Braun and E. Kemnitz, Catal. Sci. Technol., 2017, 7, 3348 DOI: 10.1039/C7CY00845G

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