Реакция #9340

Уравнение реакции

NaHCO3

DDQ

15-5

(Z)-7-{(1R,2S,3R)-3-Hydroxy-2-[1-(4-methoxy-benzyloxy)-indan-5-yl]-5-oxo-cyclopentyl}-hept-5-enoic acid methyl ester

dichloroethane

→

15-8

Выход 64.3%

(Z)-7-[(1R,2S,3R)-3-Hydroxy-5-oxo-2-(1-oxo-indan-5-yl)-cyclopentyl]-hept-5-enoic acid methyl ester

Выход 64.3%

Растворители

dichloromethane

water

Условия реакции

Обработка

1. 1
   Экстракцияthe resulting mixture was extracted with dichloromethane (3×20 mL)
2. 2
   ПромывкаThe combined dichloromethane solution was washed with brine
3. 3
   Сушкаwas dried (Na2SO4)
4. 4
   Фильтрацияfiltered
5. 5
   Другоеevaporated
6. 6
   ДругоеPurification of the residue by flash chromatography on silica gel (60% ethyl acetate/hexanes)

Методика

DDQ (10 mg, 0.041 mmol) was added to a mixture of 15-5 (11 mg, 0.021 mmol) in dichloromethane (0.5 mL)/water (25 μL). After 1 h, dichloroethane (0.5 mL) was added and the reaction was stirred overnight. Saturated NaHCO3 solution was added and the resulting mixture was extracted with dichloromethane (3×20 mL). The combined dichloromethane solution was washed with brine and then was dried (Na2SO4), filtered and evaporated. Purification of the residue by flash chromatography on silica gel (60% ethyl acetate/hexanes) gave 15-8 (5 mg, 59%).

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