Реакция #85152

Уравнение реакции

tert-butyl 2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]-3-(3-ethyloxetan-3-yl)prop-2-enoate

→

tert-Butyl 2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]-3-(3-ethyloxetan-3-yl)propanoate

Растворители

ammonium chloride

Условия реакции

Обработка

1. 1
   ДругоеAt RT
2. 2
   ДругоеAfter phase separation
3. 3
   Экстракцияthe aqueous phase was extracted three times with 25 ml of ethyl acetate
4. 4
   СушкаThe combined organic phases were dried over magnesium sulphate
5. 5
   Фильтрацияfiltered
6. 6
   Другоеthe solvent was removed under reduced pressure
7. 7
   ДругоеThe residue was purified by flash chromatography (120 g silica cartridge, 85 ml/min, cyclohexane/ethyl acetate gradient)

Методика

At RT, 302 mg (641 μmol) of tert-butyl 2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]-3-(3-ethyloxetan-3-yl)prop-2-enoate (isomer mixture) were admixed with 20 ml of a “Hot Stryker's” reagent solution [B. A. Baker et al. Org. Lett. 2008, 10, 289-292]. The reaction mixture was stirred at RT for 1.5 h, and 20 ml of saturated aqueous ammonium chloride solution were then added. After phase separation, the aqueous phase was extracted three times with 25 ml of ethyl acetate. The combined organic phases were dried over magnesium sulphate and filtered, and the solvent was removed under reduced pressure. The residue was purified by flash chromatography (120 g silica cartridge, 85 ml/min, cyclohexane/ethyl acetate gradient). Yield: 275 mg (91% of theory)

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