Piperidine → 5-[[7-(cyclopropylamino)-5-(2-fluoro-4-pyridinyl)pyrazolo[1,5-a]pyrimidin-3-yl]methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one

Participants

Reaction Conditions

Reaction Steps

To 7-(cyclopropylamino)-5-(2-fluoropyridin-4-yl)pyrazolo[1,5-a]pyrimidine-3-carbaldehyde 30 mg, 0.1 mmol) in EtOH (1 mL) was added piperidine (13 μL, 0.1 mmol), and rhodanine (13 mg, 0.1 mmol). The reaction was stirred at 80° C. for 2 hours. The solid formed was isolated by filtration, washed with water then ethanol. The recovered solid was further purified by washing with 20% methanol/dichloromethan to provide 15 mg of 5-((7-(cyclopropylamino)-5-(2-fluoropyridin-4-yl)pyrazolo[1,5-a]pyrimidin-3-yl)methylene)-2-thioxothiazolidin-4-one (35%). LCMS (M+1=413)

Provenance & Evidence