Dimethylformamide → 4-Bromo-2,6-difluorobenzaldehyde

Participants

Reaction Steps

To a THF (250 mL) solution of diisopropylamine (53 mL) was added 2.44 M hexane solution of butyl lithium at −78° C., and the reaction mixture was stirred for 30 miniute. To the reaction mixture was added a THF solution of 3,5-difluorobromobenzene (1) (36 g), and then the reaction mixture was stirred for 1 h. To the reaction mixture was added DMF 146 mL, and the reaction mixture was stirred for additional 1 h. To the reaction mixture was added a saturated ammonium chloride aqueous solution, and the reaction mixture was extracted with ethyl acetate. The organic layer was washed with water, and brine, dried over magnesium sulfate, and evaporated. The obtained residue was purified by column chromatography (hexane:ethyl acetate=20:1) to obtain the compoumd (2) 23.2 g.

Provenance & Evidence