反应详情

To a solution of N,N-dimethyl methanesulfonamide (419 mg, 3.40 mmol) in 5 mL dry THF at 5° C. was added n-BuLi (2.2 mL of 1.6M solution in hexanes 3.50 mmol) dropwise. To this stirring solution was added dropwise a solution of 4-Chloro-3-(2-chloro-phenyl)-6-methylsulfanyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-d]pyrimidine (0.500 g, 1.13 mmol) in 1 mL dry THF. The reaction mixture was stirred for 2 hours and allowed to warm to room temperature during this time. The reaction was quenched by addition of 10 mL water and 1 mL of 1.2M HCl, and the resulting aqueous solution was extracted twice with 20 mL methylene chloride. The combined organic layers were dried over MgSO4, filtered, and concentrated under reduced pressure. The residue was purified by flash chromatography (0% to 30% EtOAc in hexanes) to give 421 mg of C-[3-(2-Chloro-phenyl)-6-methylsulfanyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethyl-methanesulfonamide.

1. customThe reaction was quenched by addition of 10 mL water and 1 mL of 1.2M HCl
2. extractionthe resulting aqueous solution was extracted twice with 20 mL methylene chloride
3. dry with materialThe combined organic layers were dried over MgSO4
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by flash chromatography (0% to 30% EtOAc in hexanes)