Hydrochloric Acid → 2,4-Dibromo-N-(4-bromophenyl)butanamide

Participants

Reaction Steps

To a solution of 4-bromoaniline (1.73 g) in dichloromethane (40 ml), triethylamine (2.8 ml) and a solution of 2,4-dibromobutyryl chloride (3.2 g) in dichloromethane (10 ml) were added under ice cooling, and the mixture was stirred at room temperature for 5 hours. After addition of 1 N hydrochloric acid to the reaction solution, the mixture was separated into two layers. The aqueous layer was subjected to extraction with chloroform. The organic layers were combined, washed with a saturated aqueous solution of sodium bicarbonate and saturated saline in this order and then dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure to obtain a crude product of the title compound, which was used in the next reaction without being purified.

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