HCID 19363269, compound → HCID 19363234, compound

Participants

Reaction Steps

4,5-Dipentyloxy-2-[2-(4-nitrophenyl)ethyl]-2,3-dihydroisoindol-1-one (19.69 g, 43.3 mmol, 1.0 eq) obtained in Example 7-30 was dissolved in ethanol (200 ml), and 5% palladium-carbon catalyst (3.8 g, water content 50%) was added. The reaction mixture was stirred in a stream of hydrogen at room temperature for 2.5 hours under the pressure of 3 kgf/cm2, and filtered through celite. The filtrate was concentrated under reduced pressure, and the obtained residue was purified by column chromatography on silica gel (ethyl acetate/chloroform=1/2) to give 2-[2-(4-aminophenyl)ethyl]-4,5-bispentyloxy-2,3-dihydroisoindol-1-one (17.19 g, 93.5%) as pale-yellow crystals.

Provenance & Evidence