[CH3:1][C:2]1[O:3][C:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=2[N+:13]([O-])=O)=[N:5][N:6]=1.[H][H]>CO.C(OCC)(=O)C.[Ni]>[CH3:1][C:2]1[O:3][C:4]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=2[NH2:13])=[N:5][N:6]=1A mixture of 2-methyl-5-(2-nitro-phenyl)-[1,3,4]oxadiazole (0.73 g) and 50% Raney Ni (1 mL) in methanol (5 mL) and ethyl acetate (25 mL) was shaken under 50 psi of hydrogen for 3 hours. Filtration through celite and concentration of the filtrate provided 0.62 g of 2-methyl-5-(2-amino-phenyl)-[1,3,4]oxadiazole: 1H NMR (400 MHz, CDCl3) δ 7.71 (dd, 1H), 7.26 (dd, 1H), 6.76 (m, 2H), 5.81 (bs, 2H), 2.61 (s, 3H).
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