Investigations of the generality of quaternary ammonium salts as alkylating agents in direct C–H alkylation reactions: solid alternatives for gaseous olefins

David Schönbauer, Manuel Spettel, Robert Pollice, Ernst Pittenauer, Michael Schnürch

OnderzoeksoutputAcademicpeer review

8 Citaten (Scopus)

Samenvatting

C–H alkylation reactions using short chain olefins as alkylating agents could be operationally simplified on the lab scale by using quaternary ammonium salts as precursors for these gaseous reagents: Hofmann elimination delivers in situ the desired alkenes with the advantage that the alkene concentration in the liquid phase is high. In case a catalytic system did not tolerate the conditions for Hofmann elimination, a very simple spatial separation of both reactions, Hofmann elimination and direct alkylation, was achieved to circumvent possible side reactions or catalyst deactivation. Additionally, the truly catalytically active species of a rhodium(I) mediated alkylation reaction could be identified by using this approach.

Graphical abstract: Investigations of the generality of quaternary ammonium salts as alkylating agents in direct C–H alkylation reactions: solid alternatives for gaseous olefins
Originele taal-2English
Pagina's (van-tot)4024-4030
Aantal pagina's7
TijdschriftOrganic & Biomolecular Chemistry
Volume17
Nummer van het tijdschrift16
DOI's
StatusPublished - 2019
Extern gepubliceerdJa

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