Dimethylformamide → 4-Bromo-2-(trifluoromethoxy)benzaldehyde

Participants

Reaction Conditions

Reaction Steps

5-bromo-2-iodophenyl trifluoromethyl ether (500 mg, 1.37 mmol) was dissolved in 10 mL of anhydrous THF and cooled to −70° C. Then, n-butyllithium (0.55 mL of a 2.5 M solution, 1.37 mmol) was added dropwise over the course of 30 minutes. DMF (0.19 mL, 2.74 mmol) was added and the reaction was stirred for 30 minutes at −70° C. and then allowed to warm to 0° C. and stir for three hours. The reaction was quenched with 5 mL of saturated ammonium chloride solution and extracted with ethyl acetate. The organic layer was washed with water, dried over magnesium sulfate, filtered, and concentrated to provide 4-bromo-2-[(trifluoromethyl)oxy]benzaldehyde (100 mg, 0.37 mmol, 27%) as a yellow solid. 1H NMR (400 MHz, DMSO-D6) □ 10.1 (s, 1H), 7.9 (s, 3H)

Provenance & Evidence