反应详情

A mixture of 3-(4-tert-butyl-2-nitro-phenyl)-2-oxo-propionic acid ethyl ester (prepared in Example XX; 9.1 g, 31 mmol), iron powder (15.3 g, 274 mmol), EtOH (70 mL), and glacial AcOH (70 mL) was refluxed for 2 hours. After cooling, the resulting mixture was evaporated. THF (100 mL) was added to the residue, and the suspension was filtered on florisil, eluting with a large amount of THF. The solvents were evaporated, and the residue was purified by flash silica gel chromatography (5%-30% EtOAc in hexanes as eluents). MS(APCI): 246 (M+H).

1. temperaturewas refluxed for 2 hours
2. temperatureAfter cooling
3. customthe resulting mixture was evaporated
4. additionTHF (100 mL) was added to the residue
5. filtrationthe suspension was filtered on florisil
6. washeluting with a large amount of THF
7. customThe solvents were evaporated
8. customthe residue was purified by flash silica gel chromatography (5%-30% EtOAc in hexanes as eluents)