公开(公告)号：US10273216B2

公开(公告)日：2019-04-30

申请号：US15751349

申请日：2016-08-02

Applicant: BASF SE

Inventor： Eric George Klauber ,  Timo Frassetto ,  Reinhold Niemes ,  Ralf Bauer ,  Jochen Schroeder

IPC: C07D231/22 ,  C07D231/04 ,  C07D231/24

Abstract: The present invention relates to a process for preparing crystalline methyl N-[2-[[[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy]methyl]phenyl]-N-methoxycarbamate (I), comprising a) reacting a compound of formula II with an alkylating agent in the presence of a base in the presence of a polar solvent selected from alcohols and ketons; b) the addition of water.