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Bifunctional Fluorophosphonium Triflates as Intramolecular Frustrated Lewis Pairs: Reversible CO2 Sequestration and Binding of Carbonyls, Nitriles and Acetylenes.
- Source :
-
Chemistry - A European Journal . Oct2021, Vol. 27 Issue 55, p13709-13714. 6p. - Publication Year :
- 2021
-
Abstract
- Electrophilic fluorophosphonium triflates bearing pyridyl (3[OTf]) or imidazolyl (4[OTf])‐substituents act as intramolecular frustrated Lewis pairs (FLPs) and reversibly form 1 : 1 adducts with CO2 (5+ and 6+). An unusual and labile spirocyclic tetrahedral intermediate (72+) is observed in CO2‐pressurized (0.5–2.0 bar) solutions of cation 4+ at low temperatures, as demonstrated by variable‐temperature NMR studies, which were confirmed crystallographically. In addition, cations 3+ and 4+ actively bind carbonyls, nitriles and acetylenes by 1,3‐dipolar cycloaddition, as shown by selected examples. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09476539
- Volume :
- 27
- Issue :
- 55
- Database :
- Academic Search Index
- Journal :
- Chemistry - A European Journal
- Publication Type :
- Academic Journal
- Accession number :
- 152763272
- Full Text :
- https://doi.org/10.1002/chem.202102382