Water → 1-[(5-Chloro-1,3-benzothiazol-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-bromo-xanthine

Participants

Reaction Steps

By utilizing the well known method, 3-methyl-7-(2-butyn-1-yl)-8-bromo-xanthine 1a (297 mg, 1 mmol) was dissolved in N,N-dimethylformamide (8 ml). 2-bromomethyl-5-chloro-1,3-benzothiazole (263 mg, 1 mmol) and potassium carbonate (213 mg, 1.5 mmol) were added to give a reaction mixture. The reaction mixture was reacted overnight at room temperature and TLC was used to monitor the reaction progress. After the reaction was completed, the obtained reaction mixture was poured into water, suction filtered, and the obtained solid was washed with water, dried to give 1-[(5-chloro-1,3-benzothiazol-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-bromo-xanthine 3b (460 mg, light yellow solid), yield: 96%.

Provenance & Evidence