Process for preparing halogenated pyridine derivatives

US10766909B2 · kind B2 · utility

Assignee

• BAYER CROPSCIENCE AKTIENGESELLSCHAFT · DE

Inventors

• Marc Mosrin · Monheim, DE
• Ruediger Fischer · Pulheim, DE
• Dominik HAGER · Monheim, DE
• Laura HOFFMEISTER · Dressendorf, DE
• Nina Kausch-Busies · Bensberg, DE
• David Wilcke · Mülheim an der Ruhr, DE
• Matthieu WILLOT · Goldkronach, DE

Key dates

• Filing date: Jun 28, 2017
• Grant date: Sep 8, 2020
• Expiry date: Jun 28, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D213/803
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing halogenated pyridine derivatives of the formula (II) proceeding from compounds of the formula (I) via intermediates of the formula (IIIa) or (IIIb) where the radicals