[CH3:1][O:2][C:3]1[C:4]([C:15]([F:18])([F:17])[F:16])=[CH:5][C:6]([N+:12]([O-])=O)=[C:7]([CH2:9][C:10]#N)[CH:8]=1>C(O)C.O.C(O)(=O)C.[Pd]>[CH3:1][O:2][C:3]1[CH:8]=[C:7]2[C:6](=[CH:5][C:4]=1[C:15]([F:18])([F:17])[F:16])[NH:12][CH:10]=[CH:9]2(5-Methoxy-2-nitro-4-trifluoromethylphenyl)acetonitrile (D9) (85 g, 0.327 mol) in ethanol/water (9:1, 1.6 l) and glacial acetic acid (16 ml) was hydrogenated over 10% palladium on carbon (50 g) at 50 psi for 0.5 h at room temperature. The reaction mixture was filtered and evaporated in vacuo. The residue was partitioned between aqueous K2CO3 (1 l) and dichloromethane (2×1 l) and the combined organic extract was dried Na2SO4) and evaporated to afford the title indole (67.63 g, 96%) as a grey solid.
Wird geladen…
