Nitrogen → 1-[6-amino-5-(methyloxy)-2,3-dihydro-1H-indol-1-yl]-2-methyl-1-oxo-2-propanol

Participants

Reaction Steps

A solution of 2-methyl-1-[5-(methyloxy)-6-nitro-2,3-dihydro-1H-indol-1-yl]-1-oxo-2-propanol (840 mg, 3.00 mmol) in ethyl acetate (100 mL) and Ethanol (50 mL) was degassed with N2 and to this was added 10% Pd/C (31.9 mg, 0.300 mmol). The reaction was maintained at 50 psi H2(g) overnight at rt on the Fisher-Porter apparatus. The catalyst was removed by vacuum filtration, rinsed with ethyl acetate (200 mL), and the filtrate was concentrated under reduced pressure to provide 1-[6-amino-5-(methyloxy)-2,3-dihydro-1H-indol-1-yl]-2-methyl-1-oxo-2-propanol (0.7 g, 93%). ESIMS (M+H)+=251. 1H NMR (400 MHz, DMSO-d6) δ ppm 1.36 (s, 6H) 2.91 (t, J=8.03 Hz, 2 H) 3.71 (s, 3 H) 4.31 (t, J=8.03 Hz, 2 H) 4.57 (s, 2 H) 5.36 (s, 1 H), 6.70 (s, 1 H) 7.57 (s, 1 H).

Provenance & Evidence