[CH3:1][O:2][CH2:3][C:4]1[C:8]([N+:9]([O-])=O)=[CH:7][N:6]([CH3:12])[N:5]=1.CCOC(C)=O>CO.[Pd]>[CH3:1][O:2][CH2:3][C:4]1[C:8]([NH2:9])=[CH:7][N:6]([CH3:12])[N:5]=110% wt Pd/C (50% wet) (2 g) was added to a stirred solution of 3-(methoxymethyl)-1-methyl-4-nitropyrazole (2.02 g) in MeOH (60 ml) and the mixture stirred under an atmosphere of hydrogen overnight. The reaction mixture was filtered through a plug of celite, and the cake washed with EtOAc (200 ml). The volatiles were removed under reduced pressure to give the crude product as a brown oil. Subsequent column chromatography (SiO2; 100% EtOAc) of the crude material gave 3-(methoxymethyl)-1-methylpyrazol-4-amine (1.18 g, 70%) as a brown liquid. NMR Spectrum: (CDCl3) 2.9 (m, 2H), 3.35 (s, 3H), 3.74 (s, 3H), 4.46 (s, 2H), 6.91 (s, 1H)
Wird geladen…
