反应详情

A solution of 2-phenoxyacetic acid (75 mg, 0.49 mmol), thionylchloride (72 μL, 1.0 mmol) and one drop of DMF in toluene (2.0 mL) was refluxed for 30 min. The reaction mixture was concentrated in vacuo and the resulting crude acid chloride was dissolved in dry DCM (2.0 ml). The solution was added slowly to a cooled (0° C.) solution of {2-chloro-4-[(2-aminophenyl)amino]phenyl}(2-methylphenyl)methanone (0.150 g, 0.45 mmol) (disclosed in WO 98/32730) and triethylamine (135 mg, 1.33 mmol) in dry DCM (5.0 ml). The solution was allowed to reach room temperature. The reaction mixture was stirred for 3 h and then poured into a mixture of NaHCO3 (aq.) and EtOAc. The aqueous phase was extracted with more EtOAc (×2). The combined organic phases were washed with brine, dried (MgSO4), filtered and concentrated in vacuo. The crude product was purified by flash chromatography using DCM as the eluent to afford the title compound as a yellow oil.

1. concentrationThe reaction mixture was concentrated in vacuo
2. dissolutionthe resulting crude acid chloride was dissolved in dry DCM (2.0 ml)
3. additionThe solution was added slowly to
4. customto reach room temperature
5. extractionThe aqueous phase was extracted with more EtOAc (×2)
6. washThe combined organic phases were washed with brine
7. dry with materialdried (MgSO4)
8. filtrationfiltered
9. concentrationconcentrated in vacuo
10. customThe crude product was purified by flash chromatography