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N-Methoxy-N,2-dimethyl-1,3-oxazole-4-carboxamide → HCID 86658082, Verbindung

HRID 245438
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 245438
C([Li])(CC)C.[Si:6]([O:23][CH2:24][C:25]1[C:30]([N:31]2[CH2:36][C@H:35]([CH3:37])[O:34][C@H:33]([CH3:38])[CH2:32]2)=[C:29]([F:39])[C:28]([F:40])=[CH:27][CH:26]=1)([C:19]([CH3:22])([CH3:21])[CH3:20])([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.CON(C)[C:44]([C:46]1[N:47]=[C:48]([CH3:51])[O:49][CH:50]=1)=[O:45]>C1COCC1>[Si:6]([O:23][CH2:24][C:25]1[C:30]([N:31]2[CH2:36][C@H:35]([CH3:37])[O:34][C@H:33]([CH3:38])[CH2:32]2)=[C:29]([F:39])[C:28]([F:40])=[C:27]([C:44]([C:46]2[N:47]=[C:48]([CH3:51])[O:49][CH:50]=2)=[O:45])[CH:26]=1)([C:19]([CH3:21])([CH3:22])[CH3:20])([C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1)[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 24828113N-Methoxy-N,2-dimethyl-1,3-oxazole-4-carboxamideHCID 67357593(2R,6S)-4-(6-((tert-butyldiphenylsilyloxy)methyl)-2,3-difluorophenyl)-2,6-dimethylmorpholine2×HCID 178418400CID 53628100

Produkt 1

HCID 86658082HCID 86658082, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028
Tetrahydrofuran
Lösungsmittel
2×

Versuchsvorschrift

sec-Butyl lithium (1.4 M in cyclohexane, 3.2 eq) was added to a stirred solution of (2R,6S)-4-[6-({[tert-butyl(diphenyl)silyl]oxy}methyl)-2,3-difluorophenyl]-2,6-dimethylmorpholine (Intermediate 3, 1.0 g, 2.02 mmol) in anhydrous THF (10 mL) at −78° C., and the mixture was stirred for 2 h. N-methoxy-N,2-dimethyl-1,3-oxazole-4-carboxamide (1.0 g, 6.46 mmol) in THF (5 mL) was added dropwise and stirring was continued for an additional 1 h. The reaction mixture was quenched with saturated ammonium chloride solution and extracted with ethyl acetate. The organic layer was washed with brine and dried over anhydrous sodium sulphate. The solvent was removed under vacuum and the residue was purified by silica gel chromatography using ethyl lacetate-pet. ether gradient to obtain product. Yield: 600 mg, (50%)

Aufarbeitung

  1. stirringstirring
  2. waitwas continued for an additional 1 h
  3. customThe reaction mixture was quenched with saturated ammonium chloride solution
  4. extractionextracted with ethyl acetate
  5. washThe organic layer was washed with brine
  6. dry with materialdried over anhydrous sodium sulphate
  7. customThe solvent was removed under vacuum
  8. customthe residue was purified by silica gel chromatography
  9. customto obtain product

Quellen und Nachweise

ORD-Eintrag
ord-1b8f92ea9af44be4b447e0cfabb52a89
Quelldatensatz
uspto-grants-2014_02
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08658641B2

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