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.

公开(公告)号：US20250011301A1

公开(公告)日：2025-01-09

申请号：US18708365

申请日：2022-11-09

Applicant: CORTEVA AGRISCIENCE LLC

Inventor： MICHAEL L. TRIPPEER ,  CHUNMING ZHANG ,  CHENGLI ZU

IPC: C07D401/12

Abstract: Processes to make intermediates to produce mesoionic pesticides are disclosed. Processes to produce N-(pyrimidin-5-ylmethyl)pyridin-2-amine, an important intermediate, are disclosed.