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Showing 1 to 7 of 7 for “"Phosphenium"”.
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Frustrated Lewis Pair Reactivity of Phosphino-Phosphenium Cations
… of the seemingly stable adducts of phosphino-phosphenium cations (PPCs) will be reported. PPCs have been known for over four decades, and PPCs [Ph2ClPPPh2]+ and [Ph3PPPh2]+ have been known for two decades. Yet no one had applied them in FLP chemistry. Initially, a …
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Synthesis and Characterisation of Phosphenium Ions with Aromatic Amido Substituents
σ2λ3-Phosphenium cations A are valence isoelectronic and isolobal with silenes B and hence, carbenes C. Notably, the chemistry of these divalent phosphorus cations mirrors that of their carbon-based analogues (e.g. cycloaddition hemistry, C-H insertions, etc.), making them versatile reagents in a …
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Synthesis of ferrocenyl and 1-methylpyrrolyl bisphophines via electrophilic addition and substitution reactions of tungsten-coordinated phosphenium ions and phosphine triflates
… reactions of tungsten pentcarbonyl-coordinated phosphenium ions [W(CO)5(PRRʹ)]+, phosphine triflates [W(CO)5{PRRʹ(OSO2CF3)}], [W(CO)5{PRCl(OSO2CF3)}] and protonated amino phosphine [W(CO)5{PCl2NH(Et)2}]+ (38) with N-methylpyrrole and ferrocene. Chloride abstractions from [W(CO)5{PPh2Cl}] (1) and …
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N-Phosphino-pyridyl Imines: Flexible, Multi-functional Reagents
… and reactivity of iminophosphoranes and phosphenium cations is presented in preparation for work outlined later in this manuscript. The synthesis and coordination studies of a range of N-phosphino-pyridyl imines with the general structure (C5H5N)(Ar)C=NPR2 (1) {R = alkyl or aryl and Ar = …
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Utilizing Phosphorus(I) Methods Towards Phosphorus(III) Heterocycles and Phosphorus(I) Macromolecules
… generation of the corresponding N-heterocyclic phosphenium salts by several common methods of anion abstraction or metathesis reactions. We have also undertaken the task of generating new phosphorus containing heterocycles using alternative ligands that include oxygen and sulfur elements.
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Replacing Sp2 Hybridized Carbon Centers with Phosphorus
… platform is also used to prepare a series of phosphenium cations (the phosphorus analog of carbenes) and the reactivity of these species is subsequently disclosed.