NOVELTY - Synthesizing 2-bromo-4-methyl aniline involves reacting p-toluidine, glacial acetic acid and acetic anhydride at reflux for 2.5-3 hours, cooling, adding liquid bromine, pouring obtained product into ice water, drying and crystallizing to form white needle of methyl acetanilide (A1); reacting (A1) with glacial acetic acid, and concentrated hydrochloric acid to form hydrochloride salt (S1); suspending (S1) salt into solution of sodium hydroxide to form oily matter (M1); separating (M1), decompressing, distilling, collecting fraction of 2-bromo-4-methylaniline and then packaging and storing.    USE - For synthesis of 2-bromo-4-methyl aniline (claimed).    ADVANTAGE - The present method is simple, safe and reliable; provides convenient operation; doesn't provide pollution; uses raw material which is easy to obtain; has low cost; and provides 2-bromo-4-methyl aniline having high purity.    DETAILED DESCRIPTION - Synthesis of 2-bromo-4-methyl aniline involves: adding 320-325 g p-toluidine, 1100-1200 mole glacial acetic acid and 45-55 mol acetic anhydride in water into 3 l three-necked flask, stirring at reflux for 2.5-3 hours, natural cooling to 35-45 degrees C then dropwise adding 450-500 g liquid bromine in the flask to maintain the internal temperature of the flask and continuously stirring at 50-55 degrees C for 1 hour; pouring the obtained product into 10-20 l of ice water, washing solid precipitated with water, drying and the crystallizing by using 80% ethanol to obtain white needles of methyl acetanilide; adding obtained methyl acetanilide into another 3 l single necked flask, then adding 700-800 mole glacial acetic acid, and 700-800 mol concentrated hydrochloric acid, heating at reflux for 3 hours, completely cooling the solution, washing crude solid precipitated salt using ethanol and the drying over phosphorus pentoxide to give the hydrochloride salt; adding 1200 ml of water into beaker, and then suspending obtained hydrochloride salt in a beaker, and then adding 200-220 g solution of sodium hydroxide with rapid stirring to obtain an oily matter; separating oily matter, then decompressing and distilling, collecting the fraction of 2-bromo-4-methylaniline and then packaging and storing.