Water → 1-(4-Ethylpiperazin-1-yl)-3-(2-hydroxymethylindan-5-yl)isoquinoline dihydrochloride

The resulting 1-(4-ethylpiperazin-1-yl)-3-(2-ethoxycarbonylindan-5-yl)isoquinoline (1.06 g) was dissolved in tetrahydrofuran (6 ml). Under cooling with a cooler of sodium chloride and ice, the solution was added to a suspension of lithium aluminum hydride (0.10 g) in tetrahydrofuran (10 ml), and the mixture was stirred for 20 min. To the resulting solution were sequentially added water (100 ml), a 5N aqueous solution of sodium hydroxide (100 ml) and water (300 ml), and the resulting precipitates were filtered off. The solvent was evaporated, and the resulting residue was purified by silica gel column chromatography (toluene/acetone system), to give 0.35 g of the free compound of the title compound as a pale yellow amorphous.

1. customa 5N aqueous solution of sodium hydroxide (100 ml) and water (300 ml), and the resulting precipitates
2. filtrationwere filtered off
3. customThe solvent was evaporated
4. customthe resulting residue was purified by silica gel column chromatography (toluene/acetone system)

ORD-Eintrag

ord-c2b7291c134d49ecaba0eeed81118d29

Quelldatensatz

uspto-grants-2004_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06790844B2