Sodium Bicarbonate → 2-(2-chlorobenzyl)-3-(2-methanesulfonyl-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one

関与物質

反応手順

To a cold 0° C. solution of 2-(2-chlorobenzyl)-3-(2-methylsulfanyl-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one, 7, (460 mg, 1.23 mmol)) in THF/MeOH (20 mL of 1:1 mixture) is added dropwise a solution of Oxone® (potassium peroxymonosulfate) (3.0 g, 4.9 mmol) in H2O (15 mL). After stirring the reaction for 1.5 hours at room temperature, the solution is poured into aqueous saturated NaHCO3. The aqueous phase is extracted three times with EtOAc and the combined organic layers are washed with brine, dried (MgSO4), filtered, and concentrated in vacuo to afford 316 mg of the desired product which is used without further purification.

情報源と証拠