Ylide-Stabilized Phosphenium Cations: Impact of the Substitution Pattern on the Coordination Chemistry.

ABSTRACT: Although N-heterocyclic phosphenium (NHP) cations have received considerable research interest due to their application in organocatalysis, including asymmetric synthesis, phosphenium cations with other substitution patterns have hardly been explored. Herein, the preparation of a series of ylide-substituted cations of type [YPR]⁺ (with Y=Ph₃ PC(Ph), R=Ph, Cy or Y) and their structural and coordination properties are reported. Although the diylide-substituted cation forms spontaneous from the chlorophosphine precursor, the monoylidylphosphenium ions required the addition of a halide-abstraction reagent. The molecular structures of the cations reflected the different degrees of electron donation from the ylide to the phosphorus center depending on the second substituent

SUBMITTER: Stalder T 

PROVIDER: S-EPMC9303317 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature