Metal Ion Catalysis in Nucleophilic Substitution Reactions Promoted by Complexes of Polyether Ligands with Alkali Metal Salts

A Gobbi, D Landini, A Maia, D Secci

Index: Gobbi, Alessandro; Landini, Dario; Maia, Angelamaria; Secci, Daniela Journal of Organic Chemistry, 1995 , vol. 60, # 18 p. 5954 - 5957

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Citation Number: 25

Abstract

The anionic reactivity of (Lig>M+)Y- complexes of alkali and alkaline-earth metal salts with lipophilic polyether ligands (crown ethers, cryptands, podands) is particularly high in weakly polar In fact, in these media, the anion Y- is considerably activated due to the low interaction with the bulky complexed cation (Lig>M+) and weak stabilization by the solvent. The reactivity of these complexes is mainly determined by the charge separation induced by the ligand, ...