Fluoxastrobin
Structural formula | ||||||||||||||||
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Structural formula of the ( E ) isomer | ||||||||||||||||
General | ||||||||||||||||
Surname | Fluoxastrobin | |||||||||||||||
other names |
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Molecular formula | C 21 H 16 ClFN 4 O 5 | |||||||||||||||
Brief description |
white solid |
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properties | ||||||||||||||||
Molar mass | 458.83 g mol −1 | |||||||||||||||
Physical state |
firmly |
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Melting point |
103-105 ° C |
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Vapor pressure |
6 10 −10 Pa (20 ° C) |
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solubility |
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safety instructions | ||||||||||||||||
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Toxicological data | ||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Fluoxastrobin is a chemical compound from the group of strobilurins and methoxyacrylates , which is used as a fungicide in agriculture.
Extraction and presentation
Fluoxastrobin can be obtained by a multi-stage reaction of 2-bromo-2'-hydroxyacetophenone with H 2 NOMe, potassium tert -butanolate , tert-butyl nitrite , ethylene oxide , potassium hydroxide , 4,5,6-trifluoropyrimidine and 2-chlorophenol .
properties
Fluoxastrobin is a white solid that is practically insoluble in water. It is stable to hydrolysis . Although the ( E ) isomer is generally referred to as fluoxastrobin, the ( Z ) isomer is also contained in a minor amount in the technical product . The isomer ratio ( E ): ( Z ) is at least 90:10.
use
Fluoxastrobin is used as a fungicide in cereals and onions. In addition to the spray application, pickling agent applications are also used. The effect is based on the inhibition of complex III of the respiratory chain, the cytochrome c reductase , at the Qo point. It was launched by Bayer in 2004.
Admission
In the European Union, the active ingredient in plant protection fluoxastrobin was approved for use as a fungicide with effect from August 1, 2008.
In a number of EU countries, including Germany and Austria, as well as Switzerland, plant protection products with this active ingredient are approved.
Individual evidence
- ↑ a b USEPA: Document Display Pesticides Fact Sheet for Fluoxastrobin 2005. Retrieved October 10, 2019 .
- ↑ a b c d e Fluoxastrobin data sheet from Sigma-Aldrich , accessed on May 20, 2017 ( PDF ).
- ↑ a b c d BVL: Fluoxastrobin
- ↑ a b Wolfgang Krämer, Ulrich Schirmer, Peter Jeschke, Matthias Witschel: Modern Crop Protection Compounds . Wiley-VCH, 2011, ISBN 978-3-527-32965-6 , pp. 592, 612 (English, limited preview in Google Book search).
- ↑ Bayer CropScience Deutschland GmbH: EfA®. Retrieved October 10, 2019 .
- ↑ Commission Directive 2008/44 / EC of April 4, 2008 amending Council Directive 91/414 / EEC to include the active substances benthiavalicarb, boscalid, carvone, fluoxastrobin, Paecilomyces lilacinus and prothioconazole
- ↑ General Directorate Health and Food Safety of the European Commission: Entry on fluoxastrobin in the EU pesticide database; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; Retrieved February 20, 2016.