Hydrochloric Acid → HCID 71179018, compound

Participants

Reaction Conditions

Reaction Steps

7-(4-Fluoro-2-methylphenylamino)-6-(4-phenylpiperidine-1-carbonyl)pyrazolo[1,5-a]pyrimidine-3-sulfonamide (0.098 g, 0.175 mmol) obtained in Example 1 step 5 was dissolved in pyridine (2 mL), 4-(dimethylamino)pyridine (0.023 g, 0.189 mmol) and acetyl chloride (0.25 mL, 3.50 mmol) were added, and the mixture was stirred with heating at 50° C. for 2 hr. 1 mol/L Hydrochloric acid was added dropwise to the reaction mixture, and the mixture was extracted 3 times with chloroform. The combined organic layer was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (chloroform/methanol=9/1) to give the title compound (0.013 g, 14%).

Provenance & Evidence