Ozone Reactions with Olefins and Alkynes: Kinetics, Activation Energies, and Mechanisms.

ABSTRACT: The temperature dependence of the kinetics and the mechanisms of ozone reactions with 19 olefins and 3 alkynes were investigated. The second-order rate constants (k_O3) for ozone reactions with olefins were mostly in the range of 10³-10⁶ M^-1 s^-1, with activation energies of 17.4-37.7 kJ mol^-1. In comparison, alkynes had lower k_O3 (∼10² M^-1 s^-1) and higher activation energies (36.7-48.1 kJ mol^-1). Reactivities of both olefins and alkynes are mainly influenced by inductive effects of substituents, with steric effects observed for cyclic olefins. 2-Buten-1,4-dial (BDA), synthesized with a novel method, is a toxic olefinic oxidation product

SUBMITTER: Wang Y 

PROVIDER: S-EPMC11912337 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature