Methyl iodide → 4-chloro-1,3-dimethyl-1H-pyrazolo[3,4-d]pyrimidine

Participants

Reaction Steps

To a mixture of 4-chloro-3-methyl-1H-pyrazolo[3,4-d]pyrimidine (150.4 mg, 0.89 mmol, Example 3) and potassium carbonate (187 mg, 1.35 mmol) in dimethylformamide (6 mL) was added iodomethane (225 mg, 1.59 mmol, Aldrich). The reaction mixture was stirred at room temperature for 2 hours before it was diluted with ethyl acetate, washed with water, brine, dried and concentrated. The crude product was purified by flash chromatography (silica gel, hexanes-ethyl acetate, 90/10 to 60/40) to give 4-chloro-1,3-dimethyl-1H-pyrazolo[3,4-d]pyrimidine as a white solid. (Yield 162.3 mg).

Provenance & Evidence