Hydrochloric Acid → 1-[4-(9-Fluoro-3-phenylpyrimido[1,2-b]indazole-2-yl)phenyl]-cyclobutylamine

Participants

Reaction Steps

In a second experiment 420 mg (0.83 mmol) {1-[4-(9-fluoro-3-phenylpyrimido[1,2-b]indazole-2-yl)phenyl]cyclobutyl}carbamic acid tert-butyl ester, after dissolution in 5 mL dioxane, were treated with 22 mL 4M hydrogen chloride in dioxane. The reaction mixture was worked up as described for the first experiment. The crude products of both experiments were purified by joint chromatography on amine silicagel (eluents: dichoromethane/methanol) yielding 129.5 mg of the desired product.

Provenance & Evidence