Triethylamine → HCID 178514319, compound

Participants

Reaction Conditions

Reaction Steps

2,5-Bis(2-fluorophenyl)-2,4-dihydro-3H-pyrazol-3-one (0.63 g, 2.3 mmol) was suspended in acetonitrile (10 mL), treated with triethylamine (0.27 mL, 2.7 mmol, 1.15 equiv) and cooled to 0° C. To the mixture was added 4-acetamidobenzenesulfonyl azide (0.61 g, 2.5 mmol, 1.1 equiv) and after 30 minutes at 0° C., the mixture was warmed to ambient temperature. After stirring for 30 minutes, the mixture was poured into sodium carbonate (25 mL, aqueous saturated) and sodium hydroxide (10 mL, 1 N aqueous) and extracted with dichloromethane (2×125 mL). The combined organic extracts were dried with sodium sulfate, filtered and concentrated in vacuo. The residue was purified by silica gel gradient chromatography (100:0 to 0:100; hexanes:ethyl acetate), providing the titled compound.

Provenance & Evidence