2,4-Dichlorobenzyl chloride → HCID 22388505, compound

Participants

Reaction Conditions

Reaction Steps

6-(Methoxycarbonyl)-3-methyl-1H-indazole (0.40 g, 2.1 mmol) was dissolved in dimethylformamide (15 ml) and the mixture was ice-cooled. Sodium hydride (85 mg, 60% suspension in oil, 2.1 mmol as NaH) was added and the mixture was stirred at 0° C. for 30 min. 2,4-Dichlorobenzyl chloride (0.45 g, 2.3 mmol) was added and the mixture was stirred at room temperature for 18 hr. The reaction mixture was extracted with ethyl acetate/water. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The drying agent was filtered off and the filtrate was concentrated under reduced pressure. The obtained crystalline residue was separated and purified by silica gel column chromatography (eluent: hexane/ethyl acetate=9/1) to give the objective compound (0.54 g, 74%) as colorless crystals.

Provenance & Evidence