公开(公告)号：US20230174490A1

公开(公告)日：2023-06-08

申请号：US17906404

申请日：2021-03-17

Applicant: CORTEVA AGRISCIENCE LLC

Inventor： CHUNMING ZHANG ,  SIYU TU ,  RONALD B. LENG ,  NICHOLAS IRVINE ,  ABRAHAM SCHUITMAN ,  AARON SHINKLE ,  JAYACHANDRAN DEVARAJ ,  CHENGLI ZU

IPC: C07D213/803 ,  C07D401/04

CPC classification number: C07D213/803 ,  C07D401/04 ,  B01J23/44

Abstract: The present disclosure relates to improved methods of synthesizing 6-aryl-4-aminopicolinates, such as arylalkyl and alkyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylates.