7-(1-methylethylidene)-1,2,6,7-tetrahydro-8H-cyclopenta[d]furo[2,3-b]pyridin-8-one → 7-isopropyl-1,2,6,7-tetrahydro-8H-cyclopenta[d]furo[2,3-b]pyridin-8-one

Participants

Reaction Steps

To a solution of 7-(1-methylethylidene)-1,2,6,7-tetrahydro-8H-cyclopenta[d]furo[2,3-b]pyridin-8-one (539 mg, 2.51 mmol) in methanol (20 mL) was added palladium-carbon powder (50 mg), and the mixture was stirred at room temperature for 3 hr under a hydrogen atmosphere. The catalyst was filtered off, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane=10/90→40/60) to give the title compound (465 mg, yield 85%).

Provenance & Evidence