Sodium borohydride → HCID 58200236, compound

Participants

Reaction Steps

To a stirring suspension of (2-bromo-4,5-dimethoxy-phenyl)-(5-phenyl-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)-amine (0.2 g, 3.7 mmol) in a mixture of THF (20 mL) and TFA (1 mL) at 0° C. was added sodium borohydride (20 mg, 4.0 mmol). The reaction mixture was stirred 15 minutes at room temperature, thane quenched by addition of 10% aqueous HCl. The resulting mixture was heated to reflux for 10 minutes, then cooled and made basic by addition of 1M aqueous NaOH. The mixture was extracted with EtOAc, and the combined organic layers were dried (MgSO4), filtered and concentrated under reduced pressure to give 0.18 g of (2-bromo-4,5-dimethoxy-phenyl)-(5-phenyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)-amine, MS (M+H)=431.

Provenance & Evidence