3-(Bromomethyl)-5-(trifluoromethyl)benzonitrile → 3-(Aminomethyl)-5-(trifluoromethyl)benzonitrile

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3-Bromomethyl-5-trifluoromethyl-benzonitrile (which is prepared in Reference Example 12) (15.9 g) is dissolved in 7M-ammonia/methanol (550 ml), and the mixture is stirred at 50-60° C. for 30 minutes. The reaction solution is concentrated under reduced pressure. To the resulting residue are added a saturated aqueous sodium bicarbonate solution and chloroform, and the mixture is separated, and the organic layer is dried over sodium sulfate, and concentrated under reduced pressure. The resulting residue is purified by silica gel column chromatography (chloroform:methanol=1:0→19:1→chloroform:methanol:ammonium hydroxide solution=19:1:0.1) to give 3-aminomethyl-5-trifluorometyl-benzonitrile (10.4 g). MS (m/z): 201 [M+H]+

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