Characterization of reaction products formed during thin-layer chromatographic detection of thiocarbamate herbicides

K. Fodor-Csorba, S. Holly, Anadrás Neszmélyi, György Bujtás

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The reaction between thiocarbamate herbicides and 2,6-dichlorobenzoquinone-N-chloroimine or 2,6-dibromobenzoquinone-N-chloroimine is suitable for the detection of these herbicides on thin-layer plates with high sensitivity. The reactions were followed by infrared, nuclear magnetic resonance and mass spectrometry. We have established the formation of 2,6-dichlorobenzoquinone-S-alkyl sulphenylimines. In the case of the bromo-derivative, halogen exchange and substitution on the quinone ring took place simultaneously leading to the formation of mixed halogenated 2,6-dihalo- and, in addition, 2,3,6-trihalobenzoquinone-S-alkyl sulphenylimines. The final product of the detection reaction, i.e. 2,6-dichlorobenzoquinone-S-alkyl sulphenylimine was reacted with 2,6-dibromobenzoquinone-N-chloroimine where 2,6-dichloro-3-bromobenzoquinone-S-alkyl sulphenylimine formed as a consequence of the looser bromine-carbon linkage on the 2 and 6 positions of the quinone ring.

Original languageEnglish
Pages (from-to)1361-1367
Number of pages7
JournalTalanta
Volume39
Issue number10
DOIs
Publication statusPublished - 1992

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2,6-dichlorobenzoquinone
Thiocarbamates
Herbicides
Reaction products
Bromine
Halogens
Mass spectrometry
Mass Spectrometry
Ion exchange
Substitution reactions
Magnetic Resonance Spectroscopy
Carbon
Nuclear magnetic resonance
Infrared radiation
Derivatives

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Characterization of reaction products formed during thin-layer chromatographic detection of thiocarbamate herbicides. / Fodor-Csorba, K.; Holly, S.; Neszmélyi, Anadrás; Bujtás, György.

In: Talanta, Vol. 39, No. 10, 1992, p. 1361-1367.

Research output: Contribution to journalArticle

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