Sodium hydride → (R)-tert-butyl 3-((R)-(2-(tert-butyldimethylsilyloxy)ethoxy)(3-chlorophenyl)methyl)piperidine-1-carboxylate

HRID 451672

Reaktionsgleichung

[Cl:1][C:2]1[CH:3]=[C:4]([C@H:8]([OH:22])[C@@H:9]2[CH2:14][CH2:13][CH2:12][N:11]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[CH2:10]2)[CH:5]=[CH:6][CH:7]=1.[H-].[Na+].Br[CH2:26][CH2:27][O:28][Si:29]([C:32]([CH3:35])([CH3:34])[CH3:33])([CH3:31])[CH3:30]>C1COCC1>[Si:29]([O:28][CH2:27][CH2:26][O:22][C@@H:8]([C:4]1[CH:5]=[CH:6][CH:7]=[C:2]([Cl:1])[CH:3]=1)[C@@H:9]1[CH2:14][CH2:13][CH2:12][N:11]([C:15]([O:17][C:18]([CH3:19])([CH3:21])[CH3:20])=[O:16])[CH2:10]1)([C:32]([CH3:35])([CH3:34])[CH3:33])([CH3:31])[CH3:30]

Komponenten

Reaktionsbedingungen

Temperatur: 80 °C

Versuchsvorschrift

To a mixture of (R)-tert-butyl 3-((R)-(3-chlorophenyl)(hydroxy)methyl)piperidine-1-carboxylate (0.1964 g, 0.60 mmol, 1.0 equiv) and 60% NaH in oil (0.753 g, 18.8 mmol, 31 equiv) in THF (15 mL) was added (2-bromoethoxy)-tert-butyldimethylsilane (2.042 g, 8.5 mmol, 14 equiv). The resulting mixture was heated at 80° C. for 19 h and then quenched with water, extracted with EtOAc and dried over Na2SO4. After the solvent was removed, the crude product was used in the next step without further purification.

Aufarbeitung

customquenched with water
extractionextracted with EtOAc
dry with materialdried over Na2SO4
customAfter the solvent was removed
customthe crude product was used in the next step without further purification

Quellen und Nachweise

ORD-Eintrag: ord-ba8143588d5240ffa1729f6e19ad5135
Quelldatensatz: uspto-grants-2013_07
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08487108B2

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