Radical Carbofluorination of Alkenes with Arylhydrazines and Selectfluor: Additives, Mechanistic Pathways, and Polar Effects

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Pirzer A, Alvarez EM, Friedrich H, Heinrich M
Zeitschrift: Chemistry - A European Journal
Jahr der Veröffentlichung: 2019
Band: 25
Heftnummer: 11
Seitenbereich: 2786-2792
ISSN: 0947-6539
eISSN: 1521-3765


Abstract

Radical carbofluorination reactions starting from arylhydrazines and nonactivated alkenes, in which the C-F bond is formed through the use of Selectfluor, can be improved through the addition of anisole. Because direct trapping products could be detected only in trace amounts, anisole does primarily act as a reversible scavenger for the highly reactive ammonium radical dication released from Selectfluor in the C-F bond-forming step. As shown for three diverse substitution patterns, the main role of anisole is to prevent, or at least reduce, the undesired addition of the ammonium radical dication to the alkene, which in turn leads to an unfavorable consumption of the arylhydrazine-derived precursors required for carbofluorination. Moreover, besides the remarkable polar effects in radical trapping, this study shows that the Selectfluor-derived nitrogen-centered radical dication may add directly to alkenes, which has not been described so far.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Friedrich, Heike
Lehrstuhl für Pharmazeutische Chemie
Heinrich, Markus Prof. Dr.
Professur für Pharmazeutische Chemie
Pirzer, Anna
Lehrstuhl für Pharmazeutische Chemie


Zitierweisen

APA:
Pirzer, A., Alvarez, E.-M., Friedrich, H., & Heinrich, M. (2019). Radical Carbofluorination of Alkenes with Arylhydrazines and Selectfluor: Additives, Mechanistic Pathways, and Polar Effects. Chemistry - A European Journal, 25(11), 2786-2792. https://dx.doi.org/10.1002/chem.201805256

MLA:
Pirzer, Anna, et al. "Radical Carbofluorination of Alkenes with Arylhydrazines and Selectfluor: Additives, Mechanistic Pathways, and Polar Effects." Chemistry - A European Journal 25.11 (2019): 2786-2792.

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Zuletzt aktualisiert 2019-08-03 um 08:53