C,C,C-trifluoro-N-(3-nitro-phenyl)-methanesulfonamide → N-(3-Amino-phenyl)-C,C,C-trifluoro-methanesulfonamide

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Reaktionsschritte

1,1,1-trifluoro-N-(3-nitrophenyl)methanesulfonamide 42 (0.5 g, 1.85 mmol) was dissolved in ethanol (20 mL) treated with H2 (30 psi, Parr hydrogenator) for 2 h in the presence of Pd/C (catalytic, 50 mg). The reaction was monitored by TLC until the starting material was no longer detected. The Pd/C residue was removed by filtration over celite pad, followed by rotary evaporation of the solvent obtained 0.44 g of N-(3-aminophenyl)-1,1,1-trifluoromethanesulfonamide 43 (100% yield). The crude product was further used without further purification. MS (ES) m/z 241 (M+H+).

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