THERMAL-DECOMPOSITION OF DIMETHYLDIOXIRANE

Authors
HULL LA BUDHAI L
Citation
La. Hull et L. Budhai, THERMAL-DECOMPOSITION OF DIMETHYLDIOXIRANE, Tetrahedron letters, 34(32), 1993, pp. 5039-5042
Citations number
5
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
34
Issue
32
Year of publication
1993
Pages
5039 - 5042
Database
ISI
SICI code
0040-4039(1993)34:32<5039:TOD>2.0.ZU;2-N
Abstract
The thermal decomposition of dimethyldiaxirane (DMDO) was followed by uv/vis spectroscopy at 340 nm. At high concentration of DMDO (approxim ately 0.1M) the decomposition was found to to have an induction period followed by rapid decay. The rapid decay was shown to be caused by pr esence of reaction products. At low concentration of DMDO (approximate ly 0.02M) the decomposition was found to be first order with an Ea of 24.9 kcal/mol. Based on this result it is estimated that the dioxybira dical produced by cleavage of the O-O bond shows an activation energy of about 10 kcal/m for reclosure back to the DMDO.