Methyl 3-{5-[3-(benzyloxycarbonylamino)propoxy]-indolyl}propanoate → Methyl 3-[5-(aminopropoxy)indolyl]propanoate

Participants

Reaction Steps

A mixture of methyl 3-{5-[3-(benzyloxycarbonylamino)propoxy]indolyl}propanoate (300 mg, 0.73 mmol), as prepared in the preceding step, 10% palladium(0) on carbon (50 mg) in ethanol (20 mL) was stirred at ambient temperature under hydrogen (balloon) for 3 h. The catalyst was removed by filtration through Celite. The filtrate was concentrated to give the title compound as an off white solid (150 mg, 74%). 1H-NMR (400 MHz, CDCl3/CD3OD) δ 7.25 (d, J=8.9 Hz, 1H), 7.13 (d, J=2.6 Hz, 1H), 7.08 (d, J=2.5 Hz, 1H), 6.85 (dd, J=8.9, 2.5 Hz, 1H), 6.38 (d, J=2.9 Hz, 1H), 4.43 (t, J=6.8 Hz, 2H), 4.10 (t, J=5.8 Hz, 2H), 3.66 (s, 3H), 3.01 (q, J=7.0 Hz, 2H), 2.83 (t, J=6.8 Hz, 2H), 2.04 (m, 2H).

Provenance & Evidence