Ethyl bromodifluoroacetate → HCID 66913596, compound

Participants

Reaction Conditions

Reaction Steps

According to the Kumadaki method (K. Sato et al., Chem. Pharm. Bull., vol. 47 p. 1013 (1999)) and the above-described scheme, 4-iodobenzonitrile (Compound 1a; 343.5 mg, 1.5 mmol), bromodifluoroacetic acid ethyl ester (304.5 mg, 1.5 mmol), copper powder (190.5 mg, 3.0 mmol) and DMSO (3.0 mL) were put into a two-neck reaction tube, and the mixture was stirred under argon atmosphere at 55° C. for 24 hours. The reaction mixture was extracted with ethyl acetate and washed with water, and an organic layer was dried with anhydrous sodium sulfate. Ethyl acetate was distilled away under reduced pressure, and by carrying out purification by silica gel column chromatography, 2-(4-cyanophenyl)-2,2-difluoroacetic acid ethyl ester (Compound 2a) was obtained with a yield of 60%.

Provenance & Evidence