Hydrazine → N-((1S)-2-amino-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-4-(4-bromo-1-ethyl-1H-pyrazol-5-yl)-2-thiophenecarboxamide

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Reaction Steps

4-(4-bromo-1-ethyl-1H-pyrazol-5-yl)-N-((1S)-2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-1-{[2-(trifluoromethyl)phenyl]methyl}ethyl)-2-thiophenecarboxamide (250 mg, 0.39 mmol) was dissolved in MeOH (5 mL) and treated with NH2NH2 (0.5 mL, 15.93 mmol). The mixture was stirred at RT overnight, and concentrated. The residue was purified by column chromatography [silica, 2-10% MeOH in CHCl3 (0.5% NH4OH)] affording the free base of the title compound, which was treated with HCl(aq) in MeOH to give the title compound (144 mg, 51%) as an off white solid: LC-MS (ES) m/z 502 (M+H)+. 1H NMR (d4-MeOD, 400 MHz) δ ppm 7.93-7.87 (m, 2H), 7.72 (d, J=8.1 Hz, 1H), 7.62 (s, 1H), 7.57-7.51 (m, 2H), 7.43 (t, J=6.6 Hz, 1H), 4.67 (m, 1H), 4.25 (q, J=7.3 Hz, 2H), 3.37-3.11 (m, 4H), and 1.37 (t, J=7.1 Hz, 3H).

Provenance & Evidence