公开(公告)号：US20170166540A1

公开(公告)日：2017-06-15

申请号：US15324312

申请日：2015-06-26

Applicant: BASF Agro B.V.

Inventor： Joachim GEBHARDT ,  Manfred EHRESMANN ,  Tiziana CHIODO ,  Martin VIERTELHAUS ,  Roland GOETZ

IPC: C07D295/096 ,  C07D301/02

CPC classification number: C07D295/096 ,  C07D249/08 ,  C07D301/02 ,  C07D303/38

Abstract: The present invention relates to a process for the preparation of oxirane compounds of formula II from keto compounds III using dimethyl sulfide (CH3)2S and dimethylsulfate (CH3)2SO4, forming the reagent IV, trimethylsulfonium methylsulfate [(CH3)3S+CH3SO4−], in aqueous solution in the presence of potassium hydroxide (KOH).