Ethyl Acetate → 1-(4-methoxybenzyl)-3-methyl-1H-indazol-5-amine

Reaktionsgleichung

[CH3:1][O:2][C:3]1[CH:22]=[CH:21][C:6]([CH2:7][N:8]2[C:16]3[C:11](=[CH:12][C:13]([N+:17]([O-])=O)=[CH:14][CH:15]=3)[C:10]([CH3:20])=[N:9]2)=[CH:5][CH:4]=1.CCOC(C)=O>CO.[Pd]>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]([CH2:7][N:8]2[C:16]3[C:11](=[CH:12][C:13]([NH2:17])=[CH:14][CH:15]=3)[C:10]([CH3:20])=[N:9]2)=[CH:21][CH:22]=1

Komponenten

Versuchsvorschrift

1-(4-methoxybenzyl)-3-methyl-5-nitro-1H-indazole (275 mg, 0.93 mmol) from Step 1 of this example was dissolved in MeOH (4.6 ml) and EtOAc (10 ml) to give a clear yellow solution. Pd/C (10%, 98 mg) was added, the vessel evacuated and backfilled with hydrogen (3×) and slurry stirred under a hydrogen atmosphere for 30 minutes. The mixture was filtered through CELITE, the filter cake washed with EtOAc (2×40 ml), the filtrates combined and the volatiles removed in vacuum to give the titled compound.