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Alkylammoniotrifluoroborate functionalized polystyrenes: polymeric pre-catalysts for the metal-free borylation of heteroarenes†
Abstract
Three polymeric versions of ansa-N,N-dialkylammoniumtrifluoroborate ambiphilic molecules based on the styrene motif (poly(1-NMe2H+-2-BF3−-4-styrene) (P-Me), poly(1-NEt2H+-2-BF3−-4-styrene) (P-Et) and poly(1-piperidinyl-H+-2-BF3−-4-styrene) (P-Pip)) were synthesized, characterized and tested as heterogeneous pre-catalysts for the borylation of electron-rich heteroarenes. These heterogeneous versions of previously reported pre-catalysts show similar reactivity patterns and represent the first examples of solid-supported FLP metal-free catalysts for the C–H borylation of heteroarenes.
- This article is part of the themed collection: Inorganic chemistry of the p-block elements
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