Diisopropylethylamine → HCID 53257253, compound

Participants

Reaction Steps

Isobutanesulfonyl chloride (Aldrich Chemical Company, Inc., Milwaukee, Wis., USA; 23 mg, 0.15 mmol) was added dropwise to a stirred solution of 4-(4-methanesulfonyl-phenoxy)-1-piperidin-4-yl-1H-pyrazolo[3,4-d]pyrimidine trifluoroacetate salt (Intermediate 27; 60 mg, 0.12 mmol) and diisopropylethylamine (0.11 mL, 0.62 mmol) in dichloromethane (1 mL) at room temperature. The mixture was stirred at room temperature for 1 h and then washed with water. The organic layers was dried (sodium sulfate), filtered, evaporated, triturated with ether and purified by HPLC to give to give 4-(4-methanesulfonyl-phenoxy)-1-[1-(2-methyl-propane-1-sulfonyl)-piperidin-4-yl]-1H-pyrazolo[3,4-d]pyrimidine (26 mg, 43%) as a white solid.

Provenance & Evidence