Реакция #57336
ord-5948753222ef477090a7d1c6fc09bb4d
Уравнение реакции
Реагенты
Нет
Растворители
Условия реакции
Подробные условия
See reaction.notes.procedure_details.
Обработка
- 1Другоеquenched with 20 mL of water
- 2ДругоеThe solvent is evaporated
- 3workup.ADDITIONthe residue is diluted with 100 mL of 1:1 saturated Rochells salt/15% NaOH
- 4Экстракцияthis extracted with EtOAc (4×50 mL)
- 5Другоеdried
- 6Концентрированиеconcentrated under vacuum
- 7ДругоеThe residue is purified by flash chromatography (silica gel; Hexane/EtOAc 1:9)
Методика
To a solution of 4 (4.8 g, 12 mmol) in THF (100 mL) is added slowly 1 M DIBAL in toluene, (50 mL, 50 mmol) at −78° C. The mixture is stirred at room temperature for 1 hour and quenched with 20 mL of water. The solvent is evaporated, the residue is diluted with 100 mL of 1:1 saturated Rochells salt/15% NaOH, and this extracted with EtOAc (4×50 mL). The organic extracts are combined, dried and concentrated under vacuum. The residue is purified by flash chromatography (silica gel; Hexane/EtOAc 1:9) to provide 2.3 g (48%) of the title compound. M+H+=385.26.