Water → HCID 10178126, compound

Participants

Reaction Steps

rac-(Z)-1,3-Dihydro-4-[3-hydroxy-3-(3-nitrophenyl)-1-propynyl]-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (25 mg, 0.068 mmol) (from Example 60) was added to 10% H2O in methanol (2 mL) and to this mixture was added zinc dust (35 mg, 0.53 mmol) and ammonium chloride (10 mg, 0.19 mmol). The reaction was heated at reflux for 3 h, at which time the reaction was cooled and the solid was filtered off. The solids were washed extensively with ethyl acetate, and the ethyl acetate and methanol were evaporated in vacuo. The resulting precipitate was filtered off, dried and recrystallized from ethyl acetate/hexane to give rac-(Z)-4-[3-(3-aminophenyl)-3-hydroxy-1-propynyl]-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one. (Yield 19 mg, 73%).

Provenance & Evidence