反应详情

A mixture of 150 mg (0.37 mmol) of 2-ethyl-5-(4-hydrazino-4-oxobutoxy)-1-(phenylmethyl)-1H-indole-3-acetamide and 200 mg of Raney Ni in 15 mL of ethanol was heated to maintain reflux for 2 hours. After cooling, the EtOH was poured off and the Raney Ni washed twice with methylene chloride. The combined washes were filtered, concentrated at reduced pressure and the residue chromatographed on silica eluting with EtOAc, then 10% MeOH/EtOAc to give 69 mg (47% yield) of 5-(4-amino-4-oxobutoxy)-2-ethyl-1-(phenylmethyl)-1H-indole-3-acetamide, mp 176°-179° C.

1. temperaturewas heated
2. temperatureto maintain
3. temperaturereflux for 2 hours
4. temperatureAfter cooling
5. washthe Raney Ni washed twice with methylene chloride
6. filtrationThe combined washes were filtered
7. concentrationconcentrated at reduced pressure
8. customthe residue chromatographed on silica eluting with EtOAc