Electrochemical impedance study of reduction kinetics of the pesticide vinclozoline

Citation
L. Pospisil et al., Electrochemical impedance study of reduction kinetics of the pesticide vinclozoline, MICROCHEM J, 67(1-3), 2000, pp. 305-312
Citations number
14
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
MICROCHEMICAL JOURNAL
ISSN journal
0026265X → ACNP
Volume
67
Issue
1-3
Year of publication
2000
Pages
305 - 312
Database
ISI
SICI code
0026-265X(200012)67:1-3<305:EISORK>2.0.ZU;2-K
Abstract
The reduction of vinclozoline, 3-(3,5 -dichlorophenyl)-5-methyl-5-vinyl-1,3 -oxazolidine-2,4-dione, was studied in acetonitrile by electrochemical imp edance and by electrolysis combined with GC/MS identification of products. The electron transfer reaction was coupled with subsequent chemical reactio ns yielding two final products at -2.35 V. The main decomposition pathways included the elimination of the hetero-ring, which produced chloroaniline, whereas the cleavage of one chlorine atom was a much slower process. The ki netic parameters of both chemical processes correlated reasonably well with the observed yield of dichloroaniline and dechlorovinclozoline. (C) 2000 E lsevier Science B.V. All rights reserved.