[N:1]1([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[C:5]2=[CH:6][N:7]=[CH:8][CH:9]=[C:4]2[CH:3]=[CH:2]1.[H][H]>CC(O)=O.C(OCC)(=O)C.O=[Pt]=O>[N:1]1([C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])[CH:5]2[CH2:6][NH:7][CH2:8][CH2:9][CH:4]2[CH2:3][CH2:2]1
To a solution of tert-butyl 1H-pyrrolo[2,3-c]pyridine-1-carboxylate (0.5 g, 2.3 mmol) in AcOH (15 mL) was added PtO2 (0.25 g, 1.1 mmol). The mixture was treated with an atmosphere of hydrogen atmosphere (60 psi) and stirred for 12 h at rt. The suspension was filtered through a pad celite and concentrated in vacuo to afford a residue. The crude material was diluted with ethyl acetate (50 mL) and washed with sat. NaHCO3 (100 mL), the organic phase was separated, dried (Na2SO4) filtered and concentrated in vacuo to afford the title compound (0.53 g, 99% yield). 1H NMR (400 MHz, CDCl3) δ=6.07-5.58 (m, 1H), 4.03-3.68 (m, 1H), 3.57-3.22 (m, 3H), 3.05-2.66 (m, 2H), 2.49-2.19 (m, 1H), 1.96 (s, 4H), 1.77-1.64 (m, 1H), 1.45 (s, 9H). LC/MS (m/z): calc; d. For C12H22N2O2 (M+1H) 227. found 227.2.
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