反应详情

To a solution of methyl 5-[(1E)-3-methoxy-3-oxoprop-1-en-1-yl]-2,3-dimethyl-2H-indazole-4-carboxylate (726 mg, 2.52 mmol) in methanol (25 mL) was added palladium-carbon powder (145 mg), and the mixture was stirred under a hydrogen atmosphere at room temperature for 18 hr. The catalyst was filtered off, and the filtrate was concentrated under reduced pressure to give the title compound (666 mg, yield 91%).

1. filtrationThe catalyst was filtered off
2. concentrationthe filtrate was concentrated under reduced pressure