[EN] PROCESSES FOR THE DIAZOTIZATION OF 2,5-DICHLOROANILINES<br/>[FR] PROCÉDÉS DE DIAZOTISATION DE 2,5 DICHLOROANILINES
申请人:MONSANTO TECHNOLOGY LLC
公开号:WO2015095284A1
公开(公告)日:2015-06-25
The present disclosure relates, in general, to processes for converting 2,5- dichloroaniline compounds to the corresponding 2,5-dichlorobenzenediazonium compounds, and further relates to processes for the preparation of 2,5-dichloro- phenol which is a key intermediate used in the manufacture of dicamba.
[EN] PROCESS FOR MAKING 2,5-DIHALOGENATED PHENOL<br/>[FR] PROCÉDÉ DE PRÉPARATION DE PHÉNOL 2,5-DIHALOGÉNÉ
申请人:BASF SE
公开号:WO2015177093A1
公开(公告)日:2015-11-26
The present invention relates to a process for reacting chemical compounds comprising the step of reacting a compound of formula (IV) wherein Hal is independently selected from CI or Br, and X" is a monovalent anion, in the presence of an inorganic acid, wherein the aqueous inorganic acid has a concentration of at least about 60%, at a temperature of about 140 °C to about 250 °C, to obtain a compound of formula (V) wherein Hal is as defined above.