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Article Dans Une Revue European Journal of Inorganic Chemistry Année : 2019

Reactivity vs. Stability of Cyclopropenium Substituted Phosphonium Salts

Résumé

The stability vs. reactivity of electrophilic 3-(triphenylphosphonio)-cyclopropenium salts towards a neutral nucleophile, such as triphenylphosphane, is reported. Depending on the nature of cyclopropenyl substituents (R), the three-membered cyclic structure is preserved (R = Ph) or evolves by ring opening to the isomeric linear allene (R = Mes). The respective formation of 1,3-bis(triphenylphosphonio)-2,3-diphenylcyclopropene and 3,3-bis(triphenylphosphonio)-1,1-dimesitylallene products is rationalized on the basis of steric and electrostatic constraints.
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Dates et versions

hal-02335192 , version 1 (06-11-2020)

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Rachid Taakili, Carine Guyard-Duhayon, Noël Lugan, Yves Canac. Reactivity vs. Stability of Cyclopropenium Substituted Phosphonium Salts. European Journal of Inorganic Chemistry, 2019, 2019 (36), pp.3982-3989. ⟨10.1002/ejic.201900867⟩. ⟨hal-02335192⟩
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