Sodium hydride → Methyl 2-(3-((t-butyldimethylsilyl)oxy)phenoxy)acetate
Reaktionsgleichung
[H-].[Na+].[Si:3]([O:10][C:11]1[CH:12]=[C:13]([OH:17])[CH:14]=[CH:15][CH:16]=1)([C:6]([CH3:9])([CH3:8])[CH3:7])([CH3:5])[CH3:4].Br[CH2:19][C:20]([O:22][CH3:23])=[O:21]>CN(C)C=O>[Si:3]([O:10][C:11]1[CH:12]=[C:13]([CH:14]=[CH:15][CH:16]=1)[O:17][CH2:19][C:20]([O:22][CH3:23])=[O:21])([C:6]([CH3:9])([CH3:8])[CH3:7])([CH3:5])[CH3:4]Komponenten
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 50 °C
Versuchsvorschrift
Sodium hydride (60% mineral oil dispersion, 0.35 g, 8.7 mmol) was added to a solution of 3-((t-butyldimethylsilyl)oxy)phenol (0.49 g, 2.2 mmol), methyl 2-bromoacetate (0.37 g, 2.4 mmol), and dimethylformamide (2 mL) in a 50 mL round bottom flask under a nitrogen atmosphere at room temperature. The solution was heated in a 50° C. oil bath and allowed to stir overnight for approximately 16 hours. The resulting mixture was cooled to room temperature. The reaction was quenched with saturated aqueous ammonium chloride (100 mL) and extracted with ethyl acetate (200 mL). The organic extract was dried (Na2SO4), filtered and concentrated. The resulting crude residue was purified by combiflash (40 g column, hexanes→100% ethyl acetate/hexanes, gradient) to afford 0.5 g (77%) of methyl 2-(3-((t-butyldimethylsilyl)oxy)phenoxy)acetate.
Aufarbeitung
- temperatureThe resulting mixture was cooled to room temperature
- customThe reaction was quenched with saturated aqueous ammonium chloride (100 mL)
- extractionextracted with ethyl acetate (200 mL)
- extractionThe organic extract
- dry with materialwas dried (Na2SO4)
- filtrationfiltered
- concentrationconcentrated
- customThe resulting crude residue was purified by combiflash (40 g column, hexanes→100% ethyl acetate/hexanes, gradient)
Quellen und Nachweise
- ORD-Eintrag
- ord-88e1e745a34e4e5fb8215360fe003fe8
- Quelldatensatz
- uspto-grants-2016_07
- Patentnummer
- US09388153B2
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