(-)-Ethyl (3-methyl-4-nitro-2-oxo-2,3-dihydro-1H-indol-3-yl)acetate → (+/-)-Ethyl (4-amino-3-methyl-2-oxo-2,3-dihydro-1H-indol-3-yl)acetate

Participants

Reaction Steps

A mixture of (±)-ethyl (3-methyl-4-nitro-2-oxo-2,3-dihydro-1H-indol-3-yl)acetate from Step B (2.66 g, 9.56 mmol) and 10% Pd/C (500 mg) was stirred vigorously in MeOH (50 mL) under an atmosphere of hydrogen (ca. 1 atm). After 3 h, the mixture was filtered through a pad of Celite, washing with MeOH, and the filtrate was concentrated in vacuo to give the title compound. MS: m/z=249 (M+1).

Provenance & Evidence