Diisopropylethylamine → HCID 58056148, compound

Participants

Reaction Conditions

Reaction Steps

Diisopropylethylamine (0.35 mL, 2.01 mmol) was added at room temperature to a suspension of 4-(2-amino-4-chloro-phenoxy)-cyclohexanol (127 mg, 0.525 mmol), pyrazolo[1,5-c]pyrimidine-3-carboxylic acid (85 mg, 0.521 mmol) and HBTU (0.21 g, 0.55 mmol) in anhydrous acetonitrile (15 mL) and the resulting solution was heated at 80° C. overnight. The resulting mixture was partitioned between ethyl acetate and an aqueous solution of sodium bicarbonate (5%). The aqueous layer was extracted 3 times with ethyl acetate and the combined organic extracts were washed with brine, dried over anhydrous sodium sulfate, filtered and evaporated under reduced pressure. The brown oily residue was purified on a silica gel plug and by flash chromatography (DCM/MeOH/NH4OH) to give a pale yellow solid which was washed with dichloromethane and methanol to give 75 mg (38% yield) of pyrazolo[1,5-a]pyrimidine-3-carboxylic acid [5-chloro-2-(4-hydroxy-cyclohexyloxy)-phenyl]-amide as a white powder. MS=387 [M+H]+.

Provenance & Evidence