Photoisomerization kinetics of trifloxystrobin
| Autor: | Kaushik Banerjee, Michael Spiteller, Axel Patrick Ligon |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Magnetic Resonance Spectroscopy
Photoisomerization Light Kinetics Analytical chemistry Quantum yield Acetates Mass spectrometry Biochemistry High-performance liquid chromatography Gas Chromatography-Mass Spectrometry Analytical Chemistry symbols.namesake Isomerism Chromatography High Pressure Liquid Molecular Structure Chemistry Strobilurins Fungicides Industrial Artificial sunlight symbols Physical chemistry Methacrylates Spectrophotometry Ultraviolet Imines Raman spectroscopy Isomerization |
| Zdroj: | Analytical and bioanalytical chemistry. 382(7) |
| ISSN: | 1618-2642 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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