Hydrochloric Acid → 4-(7-(Cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-ylamino)benzonitrile hydrochloride

Participants

Reaction Conditions

Reaction Steps

5-chloro-N-cyclopropylpyrazolo[1,5-a]pyrimidin-7-amine (208 mg, 1 mmol) was suspended in EtOH (1 mL). 4-aminobenzonitrile (236 mg, 2 mmol) and then conc. HCl (125 μL, 1.5 mmol) were added and the reaction was placed in a 95° C. oil bath. After 24 h, additional conc. HCl was added (62 μL). After an additional 24 h, the reaction was cooled to 23° C. and the filter cake was washed with EtOH (2 mL) to afford 4-(7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-ylamino)benzonitrile hydrochloride (205 mg, 63%) as a light brown solid. LCMS (ES): >90% pure, m/z 291 [M+1]+.

Provenance & Evidence