Hydrochloric Acid → HCID 178479609, compound

Participants

Reaction Steps

A suspension of 7-(pyrid-3-yloxy)-5-(2,2,2-trifluoroethyl)-1-{[2-(trimethylsilyl)ethoxy]-methyl}-1,5-dihydro-4H-pyrazolo[4,3-c]quinolin-4-one and (2,2,2-trifluoroethyl)-2-{[2-(trimethylsilyl)ethoxy]methyl}-1,5-dihydro-4H-pyrazolo[4,3-c]quinolin-4-one (0.19 g, 0.39 mmol) in 10 mL of anhydrous hydrogen chloride dissolved in dioxane (4M) is stirred at room temperature for 18 hours. The suspension is filtered and the solid is washed with DCM and then purified by flash chromatography on a C18 reverse phase (H2O/MeCN: 100/0 to 0/100). The gum obtained is dissolved in molar hydrochloric acid solution and then concentrated to dryness to give 78 mg of a white powder (1.2 hydrochloride, 1.15 H2O; yield: 58%).

Provenance & Evidence