公开(公告)号：US20200031842A1

公开(公告)日：2020-01-30

申请号：US16498625

申请日：2018-03-23

Applicant: BASF Agro B.V.

Inventor： Stefan BENSON ,  Michael RACK ,  Christiane ALZNAUER ,  Roland GOETZ ,  Bernd WOLF

IPC: C07D493/08 ,  A01N43/90 ,  A01N25/02

Abstract: This invention relates to a process for preparing (±)-2-exo-(2-Methylbenzyloxy)-1-methyl-4-iso-propyl-7-oxabicyclo[2.2.1]heptane of the formula (I) any of its individual enantiomers or any non-racemic mixture thereof, comprising the step of reacting (±)-2-exo-hydroxy-1-methyl-4-isopropyl-7-oxabicyclo[2.2.1]heptane of the formula (II) any of its individual enantiomers or any non-racemic mixture thereof with a 2-Methylbenzyl compound of the formula (III) wherein X is a leaving group, in the presence of at least one base, at least one catalyst selected from rubidium salts, cesium salts and any combination thereof and at least one inert organic solvent S1.