Hydrochloric Acid → 6-Amino-1,3-dihydro-2H-indol-2-one

Participants

Reaction Conditions

Reaction Steps

Methanol (15 mL) and 1.25 M HCl in EtOH (10 ml) was added to 2,4-dinitrophenylacetic acid (837 mg, 3.7 mmol) and Pd/C (10%; 205 mg) under Argon. The argon balloon was replaced with a hydrogen balloon and it was stirred at RT for 12 h and at 50° C. for 24 h. It was cooled to RT and filtered through celite. The solvent was removed and the residue was purified by silica gel chromatography (DCM/methanol gradient) to give the title compound as a red solid.

Provenance & Evidence