Synthesis, Isolation and Crystal Structures of the Metalated Ylides [Cy₃P-C-SO₂Tol]M (M = Li, Na, K).

ABSTRACT: The preparation and isolation of the metalated ylides [Cy₃PCSO₂Tol]M ( ^Cy1-M) (with M = Li, Na, K) are reported. In contrast to its triphenylphosphonium analogue the synthesis of ^Cy1-M revealed to be less straight forward. Synthetic routes to the phosphonium salt precursor ^Cy1-H₂ via different methods revealed to be unsuccessful or low-yielding. However, nucleophilic attack of the ylide Cy₃P = CH₂ at toluenesulfonyl fluoride under basic conditions proved to be a high-yielding method directly leading to the ylide ^Cy1-H. Metalation to the yldiides was finally achieved with strong bases such as nBuLi, NaNH₂, or BnK. In the solid state, the lit

SUBMITTER: Darmandeh H 

PROVIDER: S-EPMC7386922 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature