Invention Grant
- Patent Title: Process for the preparation of 5-bromo-1,2,3-trichlorobenzene
-
Application No.: US15515322Application Date: 2015-10-08
-
Publication No.: US09975823B2Publication Date: 2018-05-22
- Inventor: Helmars Smits
- Applicant: SYNGENTA PARTICIPATIONS AG
- Applicant Address: CH Basel
- Assignee: Syngenta Participations AG
- Current Assignee: Syngenta Participations AG
- Current Assignee Address: CH Basel
- Agent James Cueva
- Priority: EP14188742 20141014
- International Application: PCT/EP2015/073219 WO 20151008
- International Announcement: WO2016/058897 WO 20160421
- Main IPC: C07C17/04
- IPC: C07C17/04 ; C07C17/06 ; C07C17/12 ; C07C17/35 ; C07C17/358 ; C07C25/10
Abstract:
The present invention relates to a process for the preparation of a compound of formula I (I), comprising reacting a compound of formula II (II), with a brominating agent in the presence of an acidic catalyst to a compound of formula III (III), and reacting the compound of formula III in tetrahydrofuran or 2-methyl-tetrahydrofuran with potassium tert-butoxide to a compound of formula I.
Public/Granted literature
- US20170267611A1 PROCESS FOR THE PREPARATION OF 5-BROMO-1,2,3-TRICHLOROBENZENE Public/Granted day:2017-09-21
Information query
