N-bromobutanimide → 1-(Bromomethyl)-2,5-difluoro-4-nitrobenzene

関与物質

反応手順

1,4-Difluoro-2-methyl-5-nitrobenzene (1 g) was dissolved in chlorobenzene (6 mL) and N-bromosuccinimide (1.54 g) added followed by benzoyl peroxide (0.2 g). The reaction mixture was stirred at reflux for 2.5 hours then additional benzoyl peroxide (0.2 g) and N-bromosuccinimide (1.54 g) were added. The reaction was refluxed for 2 hours then was cooled to room temperature, quenched with water and extracted with dichloromethane (3×). The combined organics were dried and concentrated under reduced pressure. The oil obtained was triturated with diethyl ether, filtered and the filtrate concentrated under reduced pressure to yield the title compound (3.21 g).

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