Реакция #7733

Уравнение реакции

pyridine

2-(4-fluorophenyl)-3-(2-methylsulfanyl-pyrimidin-4-yl)-3-hydroxypropionic acid methyl ester

→

desired product

Выход 43.0%

2-(4-fluorophenyl)-3-(2-methylsulfanyl-pyrimidin-4-yl)-3-oxo-propionic acid methyl ester

Выход 43.0%

Растворители

ether

CH2Cl2

CH2Cl2

Условия реакции

Обработка

1. 1
   workup.STIRRINGThe reaction mixture is stirred at room temperature for 16 hours
2. 2
   Фильтрацияfiltered through a pad of Celite
3. 3
   КонцентрированиеThe filtrate is concentrated in vacuo
4. 4
   Другоеthe resulting residue is purified over silica (25% EtOAc/hexanes)

Методика

To a suspension of CrO3 in CH2Cl2 (300 mL) is added pyridine. The mixture is stirred vigorously for 1 hour at room temp. A solution of the crude 2-(4-fluorophenyl)-3-(2-methylsulfanyl-pyrimidin-4-yl)-3-hydroxypropionic acid methyl ester, 2, prepared above in CH2Cl2 (50 mL) is added dropwise to the chromium suspension. The reaction mixture is stirred at room temperature for 16 hours, diluted with ether (1 L) and filtered through a pad of Celite. The filtrate is concentrated in vacuo and the resulting residue is purified over silica (25% EtOAc/hexanes) to afford 3.7 g (43% yield) of the desired product as a yellow solid.

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