HCID 19363234, compound → HCID 19363240, compound

Participants

Reaction Steps

2-[2-(4-Aminophenyl)ethyl]-4,5-bispentyloxy-2,3-dihydroisoindol-1-one (22.37 g, 52.7 mmol, 1.0 eq) obtained in Example 7-34 was dissolved in methanol (100 ml), and 10% HCl- methanol solution (86.0 g, 236 mmol, 4.4 eq) was added to this solution. The mixture was stired at room temperature for 30 minutes, and concentrated under reduced pressure to remove the solvent. The obtained residue was washed with hexane and dissolved in ethanol by heating. After cooling at room temperature for 1 hour, the mixture was stirred under ice-cooling. The precipitated crystals were collected by filtration, washed with cold ethanol and dried in vacuo at 40° C. overnight to give 2-[2-(4-aminophenyl)ethyl]-4,5-bispentyloxy-2,3-dihydroisoindol-1-one hydrochloride (17.451 g, 72%) as colorless needles.

Provenance & Evidence