Significant and differential acceleration of dephosphorylation of the insecticides, paraoxon and parathion, caused by alkali metal ethoxides

Abstract

In the reaction of paraoxon with alkali metal ethoxides, ion-paired EtO⁻M⁺ species are more reactive than the dissociated EtO⁻ with the reactivity order EtO⁻Li⁺ > EtO⁻Na⁺ > EtO⁻K⁺ > EtO⁻, while in the reaction of parathion, the reactivity follows the order EtO⁻K⁺ > EtO⁻ > EtO⁻Na⁺ > EtO⁻Li⁺.