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Photoisomerization kinetics of trifloxystrobin

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Abstract

The photoisomerization kinetics of trifloxystrobin (TFS) in acetone under artificial sunlight is reported. HPLC analysis showed the TFS, a strobilurine fungicide of EE conformation, was converted into an equilibrium mixture of four isomers after illumination for 7 h. The isomers were identified as EZ, EE, ZZ, and ZE and were separated in the crystalline form by preparative HPLC and characterized by use of a variety of spectroscopic techniques. The quantum yield and reaction constants for the isomerization reactions were determined. The detailed spectral features of the individual isomers measured by UV, IR, Raman, NMR and mass spectroscopy are presented and compared. The spectra of the isomers were found to be very characteristic, with good analytical significance.

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Acknowledgements

The authors thank the Ministry of Science and Technology, Government of India for awarding a BOYSCAST fellowship to Kaushik Banerjee. Thanks are also due to Bayer CropScience AG, Monheim, Germany, for providing reference standards, technical suggestions, and literature support.

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  1. Kaushik Banerjee

    Present address: National Research Centre for Grapes, Pune-412 307, India

Authors and Affiliations

  1. Institute of Environmental Research (INFU), University of Dortmund, Campus North, Otto-Hahn-Strasse 6, 44221, Dortmund, Germany

    Kaushik Banerjee, Axel Patrick Ligon & Michael Spiteller

Authors
  1. Kaushik Banerjee
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  2. Axel Patrick Ligon
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  3. Michael Spiteller
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Correspondence to Michael Spiteller.

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Banerjee, K., Ligon, A.P. & Spiteller, M. Photoisomerization kinetics of trifloxystrobin. Anal Bioanal Chem 382, 1527–1533 (2005). https://doi.org/10.1007/s00216-005-3336-8

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  • DOI: https://doi.org/10.1007/s00216-005-3336-8

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