Thionyl Chloride → HCID 86683873, compound

Participants

Reaction Conditions

Reaction Steps

Thionyl chloride (6 ml) and DMF (0.1 ml) were added to 2-hydroxy-5-nitro-3-(1H-pyrazol-1-yl)pyridine (1.37 g), followed by stirring at 80° C. for 2.5 hours. The reaction solution was adjusted to room temperature and slowly added to ice water, followed by extraction with ethyl acetate. The resultant was washed with saturated saline and dried over anhydrous sodium sulfate. Then, the solvent was distilled away under reduced pressure, the obtained residue was purified by silica gel chromatography (n-hexane:ethyl acetate=5:1 to 3:1), and a yellow solid of 2-chloro-5-nitro-3-(1H-pyrazol-1-yl)pyridine (0.12 g) was thus obtained.

Provenance & Evidence