[EN] METHODS FOR THE PREPARATION OF 5-BROMO-2-(3-CHLORO-PYRIDIN-2-YL)-2H-PYRAZOLE-3-CARBOXYLIC ACID<br/>[FR] PROCÉDÉS DE PRÉPARATION D'ACIDE 5-BROMO-2-(3-CHLORO-PYRIDIN-2-YL)-2 H-PYRAZOLE-3-CARBOXYLIQUE
申请人:FMC CORP
公开号:WO2021076832A1
公开(公告)日:2021-04-22
Described herein are novel methods of synthesizing 5-Bromo-2-(3-chloro-pyridin-2-yl)- 2H-pyrazole-3-carboxylic acid from pyrazole or pyrazole derivatives. Also described herein are novel reaction intermediates.
Disclosed are compounds of Formula 1, including all stereoisomers, N-oxides, and salts thereof, wherein X1, X2, X3, n and P are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling undesired vegetation comprising contacting the undesired vegetation or its environment with an effective amount of a compound or a composition of the invention.