79151-08-9

Upstream product

• 1940-27-8 2,5-dichloro-4-bromo-aniline 
• 583-78-8 2,5-dichlorophenol 
• 7726-95-6 bromine 
• 127-09-3 sodium acetate 
• 64-19-7 acetic acid 
• 2446-83-5 di-isopropyl azodicarboxylate 

Downstream Products

• 28253-88-5 Thiophosphoric acid O-(4-bromo-2,5-dichloro-phenyl) ester O'-(2-methoxy-ethyl) ester O''-methyl ester 
• 28253-89-6 Thiophosphoric acid O-(4-bromo-2,5-dichloro-phenyl) ester O'-ethyl ester O''-(2-methoxy-ethyl) ester 
• 17245-98-6 2,2'-Dihydroxy-3,3'5,6,6'-pentachlor-5'-brom-diphenylmethan 
• 38524-80-0 phosphorothioic acid, O-(4-bromo-2,5-dichlorophenyl)-O-ethyl S-propylester 

Relevant academic research and scientific papers

Regioselective bromination of activated aromatic substrates with a ZrBr4/diazene mixture

A regioselective method for the bromination of phenols, ethers and anilines using a ZrBr4/diazene mixture is described. The reaction takes place under mild reaction conditions and the bromine atom adds first at the para unsubstituted position with respect to the OH, OR or NR2 group of the activated aromatic substrate. Less reactive compounds such as toluene, phenyl acetate, benzonitrile and trifluoromethylbenzene remain intact under the same conditions.

Process for the production of 2,5-dichloro-4-bromophenol

This invention discloses a process for the preparation of 2,5-dichloro-4-bromophenol which comprises reacting a mixture of 2,5-dichlorophenol and 2,4-dichlorophenol with about 0.9 to about 1.2 molar amounts of bromine per mole of 2,5-dichlorophenol and thereafter recovering the 2,5-dichloro-4-bromophenol.