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Dive into the research topics where Thomas Bretschneider is active.

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Featured researches published by Thomas Bretschneider.


Pesticide Outlook | 2002

New modes of action of insecticides

Ralf Nauen; Thomas Bretschneider

Ralf Nauen and Thomas Bretschneider of Bayer CropScience AG, Research, based at Monheim in Germany outline the development of new insecticides based on novel modes of action.


Chimia | 2003

Spirodiclofen and spiromesifen: Novel acaricidal and insecticidal tetronic acid derivatives with a new mode of action

Thomas Bretschneider; Jordi Benet-Buchholz; Reiner Fischer; Ralf Nauen

The broad spectrum acaricides spirodiclofen (BAJ2740, trade name: Envidor®) and spiromesifen (BSN2060, trade name: Oberon®) with an additional excellent activity against whiteflies, both belong to the new chemical classof tetronic acid derivatives discovered at Bayer CropScience during the 1990s. The discovery process starting from herbicidal PPO (protoporphyrinogen oxidase) chemistry, the synthetic routes leading to the products, and some insight into process development of central intermediates is given. Spirodiclofen and spiromesifen have a new mode of action (interference with lipid biosynthesis), show no cross-resistance to any resistant mite or whitefly field population and are therefore valuable tools for resistance management.


Pesticide Outlook | 2003

Spirodiclofen and Spiromesifen

Ralf Nauen; Thomas Bretschneider; Alfred Elbert; Reiner Fischer; Ralf Tieman

Ralf Nauen, Thomas Bretschneider, Alfred Elbert, Reiner Fischer and Ralf Tiemann from Bayer CropScience describe these new spirocyclic tetronic acid derivatives for spider mite and whitefly control.


Archive | 2006

Spiroketal-substituted cyclic ketoenols

Thomas Bretschneider; Reiner Fischer; Oliver Gaertzen; Stefan Lehr; Mark Wilhelm Drewes; Dieter Feucht; Olga Malsam; Udo Reckmann; Christian Arnold; Thomas Auler; Waltraud Hempel; Martin Jeffrey Hills; Heinz Kehne; Christopher Hugh Rosinger; Erich Sanwald


Archive | 1997

2-and 2, 5-substituted phenylketoenols

Folker Lieb; Reiner Fischer; Thomas Bretschneider; Michael Ruther; Alan Graff; Udo Schneider; Christoph Erdelen; Ulrike Wachendorff-Neumann; Wolfram Andersch; Andreas Turberg


Archive | 2007

Biphenyl-Substituted Spirocyclic Ketoenols

Thomas Bretschneider; Reiner Fischer; Rolf Pontzen; Christian Arnold; Ulrich Görgens; Olga Malsam; Udo Reckmann; Erich Sanwald; Stefan Lehr; Jan Dittgen; Dieter Feucht; Martin Jeffrey Hills; Christopher Hugh Rosinger


Archive | 1999

Arylphenyl-substituted cyclic keto-enols

Folker Lieb; Reiner Fischer; Alan Graff; Udo Schneider; Thomas Bretschneider; Christoph Erdelen; Wolfram Andersch; Mark-Wilhelm Drewes; Markus Dollinger; Ingo Wetcholowsky; Randy Allen Myers


Archive | 1996

Alkyl dihalogenated phenyl-substituted ketoenols useful as pesticides and herbicides

Folker Lieb; Hermann Hagemann; Arno Widdig; Michael Ruther; Reiner Fischer; Thomas Bretschneider; Christoph Erdelen; Ulrike Wachendorff-Neumann; Peter Dahmen; Markus Dollinger; Hans-Joachim Santel; Alan Graff; Wolfram Andersch; Norbert Mencke; Andreas Turberg


Archive | 1997

Substituted phenyl keto enols as pesticides and herbicides

Volker Lieb; Hermann Hagemann; Arno Widdig; Michael Ruther; Reiner Fischer; Thomas Bretschneider; Christoph Erdelen; Ulrike Wachendorff-Neumann; Alan Graff; Udo Schneider


Archive | 1996

2,4,5,-trisubstituted phenylketo-enols for use as pesticides and herbicides

Folker Lieb; Hermann Hagemann; Arno Widdig; Michael Ruther; Reiner Fischer; Thomas Bretschneider; Christoph Erdelen; Ulrike Wachendorff-Neumann; Hans-Joachim Santel; Markus Dollinger; Alan Graff; Norbert Mencke; Andreas Turberg; Peter Dahmen

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