Sodium hydride → (R)-tetrahydrofuran-3-yl 4-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)piperazine-1-carboxylate

Participants

Reaction Steps

To 112 mg (0.25 mmol) of 4-nitrophenyl 4-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)piperazine-1-carboxylate dissolved in 10 mL of THF, was added (R)-tetrahydrofuran-3-ol (44 mg, 0.5 mmol), followed by 60% NaH (40 mg, 1.0 mmol) and stirred at RT for 2 hr. After 2 hr it was diluted with 20 mL of EtOAc and slowly quench with brine. The organic layer was dried over MgSO4 and concentrated, it was purified over 12 gram silica gel column eluting with 0-10% MeOH/DCM to obtain 71 mg (72% yield) of the desired product.

Provenance & Evidence