Replacement of the diazonium group by bromine

Bromotoluene has been obtained by the bromination of toluene with bromine in the presence of various catalysts 1 and with hypobromous acid.2 The best method for its preparation, however, is the diazotization of -toluidine followed by replacement of the diazonium group by bromine.3... 

Preparation by diazotization of 3-amino-4-hydroxyacetophenone and replacement of the diazonium group by bromine (Sandmeyer reaction) (51%) [1953]. Preparation by Fries rearrangement of 2-bromophenyl acetate with aluminium chloride without solvent at 100-120° [1817,1946,1947,1954], (68%) [1817]. Also obtained by reaction of ammonium tribromide on 4-hydroxyacetophenone in methylene chloride-methanol mixture [1955]. 

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See also in sourсe #XX -- [ , , , ]

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