Bromine → 6-Bromo-2-chloro-5-phenyl-thieno[2,3-d]pyrimidine

Participants

Reaction Steps

2-Chloro-5-phenyl-thieno[2,3-d]pyrimidine (0.5 g, 2.03 mmol) was stirred in acetic acid (10 mL). Bromine (0.65 g, 0.21 mL, 4.06 mmol) was added dropwise and the reaction allowed to stir at room temperature over the weekend. The reaction mixture was poured into saturated aqueous ascorbic acid solution. The resulting solid was filtered off and dried in vacuo at 40° C. to afford 6-bromo-2-chloro-5-phenyl-thieno[2,3-d]pyrimidine (567 mg).

Provenance & Evidence