反应详情

A solution of 2-acetylamino-5-iodo-4-trifluoromethyl-benzoic acid methyl ester (3 g, 7.75 mmol), tetrakis(triphenylphosphine)palladium (0.446 g, 0.775 mmol), and 3-tributylstannanyl-benzonitrile (3.65 g, 9.3 mmol) in dioxane (100 mL) was heated to 110° C. for 96 h under nitrogen. The mixture was allowed to cool to r.t., and then filtered. The filtrate was concentrated in vacuo and the crude product was purified by column chromatography (silica gel 60, hexanes/DCM 9:1) to give 4-acetylamino-3′-cyano-6-trifluoromethyl-biphenyl-3-carboxylic acid methyl ester (1.2 g, 3.3 mmol, 43%) as a yellow oil, ESI-MS: m/z 363 [M+H]+.

1. filtrationfiltered
2. concentrationThe filtrate was concentrated in vacuo
3. customthe crude product was purified by column chromatography (silica gel 60, hexanes/DCM 9:1)