Water → cis-1-tert-butoxycarbonyl-4-(2,3-dihydro-1,3-dioxo-1 H-isoindol-2-yl)methyl-3-hydroxypiperidine
Reaktionsgleichung
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@H:11]([CH2:14]OS(C)(=O)=O)[C@H:10]([OH:20])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:21]1(=[O:31])[NH:25][C:24](=[O:26])[C:23]2=[CH:27][CH:28]=[CH:29][CH:30]=[C:22]12.[K].O>CN(C)C=O>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@H:11]([CH2:14][N:25]2[C:21](=[O:31])[C:22]3[C:23](=[CH:27][CH:28]=[CH:29][CH:30]=3)[C:24]2=[O:26])[C@H:10]([OH:20])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 60 °C
Versuchsvorschrift
To a solution of cis-1-tert-butoxycarbonyl-3-hydroxy-4-methanesulfonyloxymethylpiperidine (2.0 g) in dimethylformamide (40 ml) was added potassium phthalimide (1.44 g), and the resulting mixture was stirred at 60° C. for 7 hr. Water was added to the reaction mixture and the mixture was extracted with ethyl acetate. The organic layer was washed successively with saturated aqueous sodium hydrogencarbonate solution and brine, and dried. The solvent was evaporated under reduced pressure and the residue was purified by silica gel column chromatography to give 2.4 g of cis-1-tert-butoxycarbonyl-4-(2,3-dihydro-1,3-dioxo-1 H-isoindol-2-yl)methyl-3-hydroxypiperidine.
Aufarbeitung
- extractionthe mixture was extracted with ethyl acetate
- washThe organic layer was washed successively with saturated aqueous sodium hydrogencarbonate solution and brine
- customdried
- customThe solvent was evaporated under reduced pressure
- customthe residue was purified by silica gel column chromatography
Quellen und Nachweise
- ORD-Eintrag
- ord-f80c9d1464594f359982c3bca5f2a81d
- Quelldatensatz
- uspto-grants-1999_01
- Patentnummer
- US05864039
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