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T. I. Pushkareva, I. G. Zenkevich
HPLC-MS identification
of products of difenoconazole electrochemical oxidation in solutions
Abstract
Products of electrochemical
transformations of organic compounds, especially their oxidation, are similar
in many respects to products of their chemical reactions. The information on
nature and formation mechanisms of such products is important for pesticides,
because it allows characterizing the mechanisms of their decomposition in soil,
aquatic environments and plants. A set of electrochemical transformations
processes of the pesticide difenoconazole [cis-,trans-1-((2-(2-chloro-4-(4-chlorophenoxy)phenyl)-4-methyl-1,3-dioxolan-2-yl)methyl)-1H-1,2,4-triazole] in its solution in aqueous organic medium
[mixture of aqueous solution of ammonium formate (pH 7.4) and acetonitrile (3:
1 v/v)] with concentration 100 g/mL and the results of HPLC-ESI-MS-MS
identification of the products are considered. It has been revealed that
oxidation products formed with the participation of an aliphatic fragment of
the molecule predominate in the mixture of the difenoconazole electrolysis
products.
Key words: Pesticides, difenoconazole,
electrochemical processes, hydrolysis, oxidation and reduction, identification
of products.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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