[CH2:1]([O:3][C:4](=[O:20])[CH2:5][O:6][C:7]1[CH:12]=[CH:11][C:10]([CH2:13][C:14]([CH3:19])([N+:16]([O-])=O)[CH3:15])=[CH:9][CH:8]=1)[CH3:2].[H][H]>C(O)C.[Pt]=O>[CH2:1]([O:3][C:4](=[O:20])[CH2:5][O:6][C:7]1[CH:12]=[CH:11][C:10]([CH2:13][C:14]([NH2:16])([CH3:15])[CH3:19])=[CH:9][CH:8]=1)[CH3:2]A solution of ethyl(4-[2-methyl-2-nitropropyl]phenoxy)ethanoate (3.6 g, 12.8 mmol) in ethanol (35 mL) was charged with platinum oxide (0.72 g) and hydrogenated on a Parr shaker using 60 psi of hydrogen for 72 h at room temperature. The catalyst was filtered and the solution concentrated in vacuo. The resulting residue was purified by flash chromatography over silica gel eluting with5% MeOH/CHCl3/NH3 to provided 0.9 g (28%) of a clear oil. MS (FD+): m/z 251.
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