5-halo-4-fluoro-4,7,7-trimethyl-3-oxabicyclo[4.1.0]heptan-2-ones, process for their preparation and their use for preparing cyclopropanecarboxylic acids

US6337407B1 · kind B1 · utility

Assignee

• Aventis CropScience GmbH · DE

Inventors

• Jean-Pierre Demoute · Le Touquet-Paris-Plage, FR
• Gunter Homberger · Kelkheim, DE
• Sergej Pazenok · Kelkheim, DE
• Didier Babin · Ifs, FR

Key dates

• Filing date: Nov 8, 2000
• Grant date: Jan 8, 2002
• Expiry date: Nov 8, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/09
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula (I),  in which Hal is Cl, Br or I,are suitable for use as intermediates in the preparation of pyrethroids.