Sodium borohydride → 7-(3-Aminophenyl)-2-(4-phenoxyphenyl)-4,5,6,7-tetrahydro pyrazolo[1,5-a]pyrimidine-3-carbonitrile

Participants

Reaction Conditions

Reaction Steps

To a solution of 7-(3-aminophenyl)-2-(4-phenoxyphenyl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (150 mg, 0.372 mmol) in ethanol (10 mL) was added NaBH4 (70 mg, 1.86 mmol). The mixture was stirred at rt for 16 hr and 60° C. for 2 hr. Then the reaction mixture was concentrated to a residue and partitioned between EA (50 mL) and brine (40 mL). Organic layer was separated from aqueous layer, washed with brine (50 mL×2), dried over Na2SO4 and concentrated to afford 135 mg (crude) of 7-(3-aminophenyl)-2-(4-phenoxyphenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-3-carbonitrile as a yellow solid. MS (ESI) m/e [M+1]+ 408.

Provenance & Evidence