Reaktion #11886

Reaktionsgleichung

3-(2,4-dichloro-pyrimidin-5-yl)-2-(3,4-dimethoxy-phenyl)-propionic acid ethyl ester

aniline

→

3-(2,4-diphenylamino-pyrimidin-5-yl)-2-(3,4-dimethoxy-phenyl)-propionic acid ethyl ester

Reaktionsbedingungen

Aufarbeitung

1. 1
   WaschenThe reaction mixture was washed with hexanes (50 mL×3)
2. 2
   Sonstigethe supernatant was decanted off after each time
3. 3
   workup.DISSOLUTIONThe residue was then dissolved in ethyl acetate (100 mL)
4. 4
   Waschensuccessively washed with saturated aqueous ammonium chloride solution (30 mL), water (30 mL) and brine (30 mL)
5. 5
   Trocknendried over anhydrous sodium sulfate
6. 6
   Filtrationfiltered
7. 7
   Einengenconcentrated in vacuo
8. 8
   SonstigeThe residue was then purified by flash column chromatography

Vorschrift

A mixture of 3-(2,4-dichloro-pyrimidin-5-yl)-2-(3,4-dimethoxy-phenyl)-propionic acid ethyl ester (440 mg, 1.1 mmol) (from Example 11a supra) and aniline (2.0 mL) (Aldrich) was heated at 110° C. for 2 hours. The reaction mixture was washed with hexanes (50 mL×3) and the supernatant was decanted off after each time. The residue was then dissolved in ethyl acetate (100 mL) and successively washed with saturated aqueous ammonium chloride solution (30 mL), water (30 mL) and brine (30 mL), dried over anhydrous sodium sulfate, filtered, and concentrated in vacuo. The residue was then purified by flash column chromatography to give the crude 3-(2,4-diphenylamino-pyrimidin-5-yl)-2-(3,4-dimethoxy-phenyl)-propionic acid ethyl ester as an off-white solid. (Yield 470 mg, 86%).

Quelle