公开(公告)号：US20240351991A1

公开(公告)日：2024-10-24

申请号：US18687372

申请日：2022-08-26

Applicant: SYNGENTA CROP PROTECTION AG

Inventor： Denis GRIBKOV ,  Harry John MILNER

IPC: C07D261/04

CPC classification number: C07D261/04

Abstract: The present invention relates to a process for the preparation of a compound of formula (I) or an enriched composition comprising a compound of formula (I), by reacting a compound of formula (II), with hydroxylamine or its salt, a base, a chiral catalyst, and an organic solvent, wherein said base is an anion exchange resin.

公开(公告)号：US20230339907A1

公开(公告)日：2023-10-26

申请号：US18041572

申请日：2021-08-13

Applicant: SYNGENTA CROP PROTECTION AG

Inventor： Tomas SMEJKAL ,  Raphael DUMEUNIER ,  Denis GRIBKOV

IPC: C07C243/40 ,  C07D403/04

CPC classification number: C07D403/04 ,  C07C243/40

Abstract: The present invention provides, inter alia, a process for producing a compound of formula (I) wherein the substituents are as defined in claim 1. The present invention further provides intermediate compounds utilised in said process, and methods for producing said intermediate compounds.