1-Chloro-2,4-Dinitrobenzene → HCID 18509213, compound

Participants

Reaction Steps

To a solution of 5-chloro-1,3-dimethyl-N-methoxy-4-pyrazolesulfonamide (0.48 g (2.00 mmol)) and 2,4-dinitrochlorobenzene (0.49 g (2.42 mmol)) in DMF (3.0 ml), sodium hydride (60%, 0.09 g (2.25 mmol)) was added dropwise under cooling with ice and with stirring and the mixture was stirred under cooling with ice for one hour and at room temperature for one hour. Water was added to the reaction mixture and the resulting mixture was extracted with ethyl acetate. The extract was washed with water, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The residue was subjected to silica gel column chromatography with chloroform-hexane (10:1) as eluent to give 0.65 g (87%) of the title compound as pale yellow crystals.

Provenance & Evidence