反应详情

3-Chloro-4-fluoroaniline (6.40 mmol) was added at 0° C. to a solution of 2-[chloro-(4-cyano-phenyl)-methyl]-1-isopropyl-1H-pyrrole-3-carboxylic acid ethyl ester (Step H3) (3.20 mmol). Then Et3N (9.60 mmol) was added and the mixture was stirred at rt for 1 h. The mixture was diluted with EtOAc. The organic layer was washed successively with H2O (2×), brine, dried (Na2SO4), filtered and concentrated. The product was purified by flash chromatography to afford the title compound. tR: 5.96 min (HPLC 4); ESI-MS: tR=1.35 min, [M+H]+ 440/442 (LC-MS 1).

1. washThe organic layer was washed successively with H2O (2×), brine
2. dry with materialdried (Na2SO4)
3. filtrationfiltered
4. concentrationconcentrated
5. customThe product was purified by flash chromatography