反应详情

温度

10 °C

3,3-dichloro-1-(2,6-dichloro-5-fluoro-3-pyridinyl)-2-propen-1-one (374.0 mg, 1.29 mmol) was dissolved in CH2Cl2 (5 mL) and cooled to 10° C. Aniline (120.0 mg, 1.29 mmol) and isopropylamine (76.5 mg, 1.29 mmol) were added dropwise as a mixture in 3 mL of 1,4-dioxane. TEA (0.897 mL, 6.45 mmol) was added and the reaction mixture was warmed to room temperature and left to stir for 2 h. The dioxane was removed in vacuo and the brown residue was partitioned between EtOAc and saturated aqueous NaHCO3. The aqueous layer was extracted with EtOAc. The combined organic extracts were washed with brine, dried over MgSO4 and concentrated in vacuo. Purification of the residue using Biotage silica gel chromatography eluting with 6:1 to 7:3 Hex:EtOAc provided (2Z)-3-anilino-1-(2,6-dichloro-5-fluoro-3-pyridinyl)-3-(isopropylamino)-2-propen-1-one (45 mg, 10%) as an off-white solid: LCMS RT: 3.63 min, MH+: 368.2.

1. temperaturethe reaction mixture was warmed to room temperature
2. waitleft
3. customThe dioxane was removed in vacuo
4. customthe brown residue was partitioned between EtOAc and saturated aqueous NaHCO3
5. extractionThe aqueous layer was extracted with EtOAc
6. washThe combined organic extracts were washed with brine
7. dry with materialdried over MgSO4
8. concentrationconcentrated in vacuo
9. customPurification of the residue
10. washeluting with 6:1 to 7:3 Hex