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Step 1: 4-methyl-2-nitro-1-trifluoromethylbenzene (1 g, 4.8 mmol) and 30 mL of methanol were added to a 100 mL reaction vial. Pd/C catalyst (0.2 g, 10% content) was then added. The reaction mixture was stirred under hydrogen atmosphere (1 atm, 25°C) for 4 hours. Upon completion of the reaction, the reaction solution was filtered to remove the catalyst and the filtrate was concentrated. The residue was purified by column chromatography (eluent: ethyl acetate/petroleum ether = 1:10) to afford 2-amino-4-methylbenzotrifluoride (0.68 g, 80% yield). Mass spectrometry analysis: [M+1]+ 176.2.

[1] Patent: EP3150592, 2017, A1. Location in patent: Paragraph 0133; 0134; 0135
[2] Bioorganic and Medicinal Chemistry Letters, 2015, vol. 25, # 17, p. 3738 - 3743