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EP0143747A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Lacton derivatives, method for their preparation and their use as pesticides

Assignee: Novartis AG
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Filing: 1984-11-19
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Granted: —
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Expires: 2004-11-19
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Abstract

Abstract Translated from German Die Verbindung der Formel I <IMAGE> worin R2 Methyl, Äthyl, Isopropyl oder sek.-Butyl bedeutet, läasst sich durch selektive Chlorierung eines entsprechenden Milbemycin-Derivats mit wahlweise unterchloriger Säure (HOCl) oder Sulfurylchlorid (SO2Cl2) bei -10 bis +60°C herstellen. Sie dient als Wirkstoff zur Bekämpfung von Arthropodenarten, wie Schadinsekten oder tierische Ekto- oder Endoparasiten, und wird in Form von Mitteln angewandt. Die Verbindung dient auch als Zwischenprodukt zur weiteren Derivatisierung von Milbemycin-Derivaten. The compound of the formula I <IMAGE> in which R2 denotes methyl, ethyl, isopropyl or sec-butyl can be obtained by selective chlorination of a corresponding milbemycin derivative with optionally hypochlorous acid (HOCl) or sulfuryl chloride (SO2Cl2) at -10 to +60 ° C. It serves as an active ingredient for controlling arthropod species, such as insect pests or animal ectoparasites or endoparasites, and is used in the form of agents. The compound also serves as an intermediate for the further derivatization of milbemycin derivatives.

Inventors

  • 👤 Urs Dr. Burckhardt

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 16:48
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/01

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