Preparation and Thermal Decomposition Reaction of p-Chloro Benzaldehyde Diperoxide in Tetrahydrofuran Solution

摘要

Preparation and thermal decomposition studies of the title molecule (3,6-di-p-chlorophenyl-1,2,4,5-tetraoxacyclohex-ane) were carried out in tetrahydrofuran solution in the 52-130°C temperature range. The overall reaction follows a rirst-order kinetic law up to at least 60% diperoxide conversion. The activation parameters (ΔH~# = 15.1 ± 0.7kcal mol~(-1) and ΔS~# =-35.5± 1.9 cal mol~(-1)K~(-1)) for the unimolecular rupture of the O—O bond in the diperoxide molecule were obtained by measuring the undecom-posed diperoxide at different reaction times by the HPLC technique. P-chlorobenzaldehyde, p-chlorobenzoic acid, and chlorobenzene were detected by GC as the major organic products of the reaction.