Fluorophosphoniums as Lewis acids in organometallic catalysis: application to the carbonylation of β-lactones - Archive ouverte HAL
Article Dans Une Revue Chemical Communications Année : 2024

Fluorophosphoniums as Lewis acids in organometallic catalysis: application to the carbonylation of β-lactones

Résumé

We describe the synthesis and characterisation of four organic Lewis acids based on fluorophosphoniums, with tetracarbonyl cobaltate as the counter-anion: [R3PF]+[Co(CO)4]- (with R = o-Tol, Cy, iPr, and tBu). Their catalytic activity was investigated for the carbonylation of β-lactones to succinic anhydrides. In the presence of [tBu3PF]+[Co(CO)4]- IV (3 mol%), 90% of succinic anhydride was afforded from β-propiolactone after 16 h at 80 °C, at a very mild pressure of 2 bar of carbon monoxide. Our study sets the first example of the use of a main-group cation as a Lewis acidic partner in the cobalt-catalyzed carbonylation of β-lactones.
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hal-04660725 , version 1 (24-07-2024)

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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 to the carbonylation of β-lactones. Chemical Communications, 2024, 60 (8), pp.1043-1046. ⟨10.1039/d3cc04282k⟩. ⟨hal-04660725⟩
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