Water → 5-Bromo-4-chloro-7H-pyrrolo[2,3-d]pyrimidine

Participants

Reaction Steps

To a suspension of 4-chloro-7H-pyrrolo[2,3-d]pyrimidine (5.91 g, 38 mmol) in DCM (250 mL) was added NBS (7.93 g, 44 mmol). The suspension was stirred at room temperature for 3 hours. Water (200 mL) was added to the reaction mixture. The mixture was sonicated for 5 min. The solid was collected by filtration and washed with water, then taken into 100 mL of MeOH. The suspension was sonicated for 3 min. The solid was collected by filtration as the desired product (6.47 g, 72%). LCMS[M+1]: 232.

Provenance & Evidence