Fluorophosphoniums as Lewis acids in organometallic catalysis: application in cobalt-catalyzed carbonylation of β-lactones - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Accéder directement au contenu
Article Dans Une Revue Chemical Communications Année : 2023

Fluorophosphoniums as Lewis acids in organometallic catalysis: application in cobalt-catalyzed carbonylation of β-lactones

Résumé

Within the context of the development of phosphorus-based Lewis acids, we report herein the synthesis of four fluorophosphonium organic Lewis acids, with tetracarbonyl cobaltate as counter-anion: [R3PF] + [Co(CO)4]-(with R = o-Tol, Cy, i Pr, and t Bu). These novel ion pairs were fully characterized by NMR and IR spectroscopy, elemental analysis, and, for three of them, X-ray diffraction. The catalytic activities of these ion pairs were investigated for the carbonylation of β-lactones to succinic anhydrides. [ t Bu3PFCo(CO)4] IV (3 mol%) afforded 91 % of succinic anhydride after 16 h at 80 °C, at a very mild pressure of 2 bar of carbon monoxide. To our knowledge, this work is the first report on using fluorophosphoniums as main-group Lewis acids in a transition metal-catalyzed reaction.

Domaines

Chimie Catalyse
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cea-04440608 , version 1 (06-02-2024)

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Paternité - Pas d'utilisation commerciale - Pas de modification

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Marie-Hélène Pietraru, Louise Ponsard, Nicolas Lentz, Pierre Thuéry, Emmanuel Nicolas, et al.. Fluorophosphoniums as Lewis acids in organometallic catalysis: application in cobalt-catalyzed carbonylation of β-lactones. Chemical Communications, 2023, 60 (8), pp.1043-1046. ⟨10.26434/chemrxiv-2023-d3r4g⟩. ⟨cea-04440608⟩
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