Sulfuric Acid → HCID 20082258, compound

Participants

Reaction Steps

which comprises first adding 1-1.5 molar equivalents of bromine to a reaction medium consisting essentially of 2-(1-anthraquinonylamino)-benzoic acid of formula II ##STR14## and 96 to 100% sulfuric acid at a temperature of 0°-25° C. to form a 5-bromo-2-(1-anthraquinonylamino)benzoic acid of the formula I ##STR15## in at least 92% absolute yield and then removing excess bromine and product hydrogen bromide and then raising the temperature to 50°-100° C.

Provenance & Evidence