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Lithium hexamethyldisilazane → (S)-2-(4-Bromo-2-fluorophenylamino)-N-(2-(tert-butyldimethylsilyloxy)propoxy)-1-methyl-6-oxo-1,6-dihydropyridine-3-carboxamide

HRID 15978
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 15978
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]2[N:10]([CH3:20])[C:11](=[O:19])[CH:12]=[CH:13][C:14]=2[C:15]([O:17]C)=O)=[C:4]([F:21])[CH:3]=1.[Si:22]([O:29][C@@H:30]([CH3:34])[CH2:31][O:32][NH2:33])([C:25]([CH3:28])([CH3:27])[CH3:26])([CH3:24])[CH3:23].C[Si]([N-][Si](C)(C)C)(C)C.[Li+]>C1COCC1>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]2[N:10]([CH3:20])[C:11](=[O:19])[CH:12]=[CH:13][C:14]=2[C:15]([NH:33][O:32][CH2:31][C@@H:30]([O:29][Si:22]([C:25]([CH3:26])([CH3:28])[CH3:27])([CH3:24])[CH3:23])[CH3:34])=[O:17])=[C:4]([F:21])[CH:3]=1
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Komponenten

5

Edukt 3

HCID 2733832Lithium hexamethyldisilazaneHCID 58374418(S)-O-(2-((tert-Butyldimethylsilyl)oxy)propyl)hydroxylamineHCID 66673525Methyl 2-(4-bromo-2-fluorophenylamino)-1-methyl-6-oxo-1,6-dihydropyridine-3-carboxylate

Produkt 1

HCID 86612533(S)-2-(4-Bromo-2-fluorophenylamino)-N-(2-(tert-butyldimethylsilyloxy)propoxy)-1-methyl-6-oxo-1,6-dihydropyridine-3-carboxamide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of methyl 2-(4-bromo-2-fluorophenylamino)-1-methyl-6-oxo-1,6-dihydropyridine-3-carboxylate (0.050 g, 0.14 mmol) and (S)—O-(2-(tert-butyldimethylsilyloxy)propyl)hydroxylamine (0.072 g, 0.35 mmol) in THF (1.50 mL) at 0° C. was slowly added lithium bis(trimethylsilyl)amide (0.70 ml, 0.70 mmol). After addition, the reaction mixture was stirred for 1 hour at room temperature and then quenched by with saturated NaHCO3. The reaction mixture was partitioned between EtOAc and sat NaCl. The layers were separated and the aqueous layer was back-extracted with EtOAc (1×). The combined organic layers were dried (Na2SO4), filtered and concentrated under reduced pressure to yield a crude brown solid that was used without further purification in the next step.

Aufarbeitung

  1. customat 0° C.
  2. additionAfter addition
  3. customquenched by with saturated NaHCO3
  4. customThe reaction mixture was partitioned between EtOAc
  5. customThe layers were separated
  6. extractionthe aqueous layer was back-extracted with EtOAc (1×)
  7. dry with materialThe combined organic layers were dried (Na2SO4)
  8. filtrationfiltered
  9. concentrationconcentrated under reduced pressure
  10. customto yield a crude brown solid that
  11. customwas used without further purification in the next step

Quellen und Nachweise

ORD-Eintrag
ord-0d6a1cc7087a4efeb2c6c99318e08789
Quelldatensatz
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07732616B2

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