N-[4-bromo-3-(trifluoromethyl)phenyl]-2-nitrobenzamide → 2-Amino-N-(4-bromo-3-trifluoromethylphenyl)benzamide

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Reaction Steps

A solution of 2-nitro-N-(4-bromo-3-trifluoromethylphenyl)benzamide (intermediate 1a; 32 g, 82 mmol) in methanol (1000 mL) is hydrogenated at atmospheric pressure over Raney nickel (6 g) at 21° C. The calculated amount of hydrogen is taken up after 7 hours. The mixture is filtered and the solvent is evaporated under reduced pressure to yield the crude product which is purified by recrystallisation from diethylether-hexane to give the title compound as a colourless crystalline solid, m.p. 142-144° C.

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