反应详情

Then, 0.12 g of 5% palladium/carbon and 30 ml of a tetrahydrofuran solution containing 1.21 g of 4-((R)-1-methylheptyloxycarbonyl)benzoic acid benzyl ester were stirred overnight at room temperature in a stream of hydrogen to decompose a benzyl protective group by hydrogenation. 5% palladium/carbon was removed using Celite as a filter aid, and the filtrate was concentrated. The concentrate obtained was purified by column chromatography to obtain 0.91 g of 4-((R)-1-methylheptyloxycarbonyl)benzoic acid as a colorless liquid (gradually crystallized) (isolated yield: 99%).

1. custom5% palladium/carbon was removed
2. concentrationthe filtrate was concentrated
3. customThe concentrate obtained
4. customwas purified by column chromatography