反应详情

温度

95 °C

A mixture of 4-bromo-2-nitroaniline (2.17 g), 3-chloro-4-trifluoromethyl-phenylboronic acid (3.5 g), and Na2CO3 (3.5 g), tetrakis(triphenylphosphine)palladium(0) (0.5 g), in DME (60 mL) and water (60 mL) was degassed under vacuum and the vacuum was broken with N2 gas. The resultant reaction mixture was kept stirring at 90-100° C. for 4 h. The reaction mixture was cooled to room temperature, separated the organic layer and the aqueous layer was extracted with ethyl acetate (100 mL). The combined organic layer was dried over sodium sulfate, filtered off sodium sulfate, the filtrate was concentrated and the residue was purified by column chromatography using a silica gel stationary phase and ethyl acetate in hexanes (2:8) as an eluent to afford 3′-chloro-3-nitro-4′-trifluoromethyl-biphenyl-4-ylamine (3.2 g).

1. customin DME (60 mL) and water (60 mL) was degassed under vacuum
2. customThe resultant reaction mixture
3. temperatureThe reaction mixture was cooled to room temperature
4. customseparated the organic layer
5. extractionthe aqueous layer was extracted with ethyl acetate (100 mL)
6. dry with materialThe combined organic layer was dried over sodium sulfate
7. filtrationfiltered off sodium sulfate
8. concentrationthe filtrate was concentrated
9. customthe residue was purified by column chromatography