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Lithium hexamethyldisilazane → 1-(5-bromo-2-methoxyphenyl)-N-(isoxazol-3-yl)-N-(4-methoxybenzyl)-2-oxo-1,2-dihydroquinoline-6-sulfonamide

HRID 1504545
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1504545
[Br:1][C:2]1[CH:3]=[CH:4][C:5]([O:34][CH3:35])=[C:6]([N:8]2[C:17]3[C:12](=[CH:13][C:14]([S:18](OC4C(F)=C(F)C(F)=C(F)C=4F)(=[O:20])=[O:19])=[CH:15][CH:16]=3)[CH:11]=[CH:10][C:9]2=[O:33])[CH:7]=1.[CH3:36][O:37][C:38]1[CH:50]=[CH:49][C:41]([CH2:42][NH:43][C:44]2[CH:48]=[CH:47][O:46][N:45]=2)=[CH:40][CH:39]=1.C[Si]([N-][Si](C)(C)C)(C)C.[Li+]>>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([O:34][CH3:35])=[C:6]([N:8]2[C:17]3[C:12](=[CH:13][C:14]([S:18]([N:43]([C:44]4[CH:48]=[CH:47][O:46][N:45]=4)[CH2:42][C:41]4[CH:40]=[CH:39][C:38]([O:37][CH3:36])=[CH:50][CH:49]=4)(=[O:20])=[O:19])=[CH:15][CH:16]=3)[CH:11]=[CH:10][C:9]2=[O:33])[CH:7]=1
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Komponenten

4

Edukt 3

HCID 2733832Lithium hexamethyldisilazaneHCID 82671591N-[(4-methoxyphenyl)methyl]-1,2-oxazol-3-amineHCID 117736973Perfluorophenyl 1-(5-bromo-2-methoxyphenyl)-2-oxo-1,2-dihydroquinoline-6-sulfonate

Produkt 1

HCID 1177371841-(5-bromo-2-methoxyphenyl)-N-(isoxazol-3-yl)-N-(4-methoxybenzyl)-2-oxo-1,2-dihydroquinoline-6-sulfonamideAusbeute 70,1 %

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

A flask containing perfluorophenyl 1-(5-bromo-2-methoxyphenyl)-2-oxo-1,2-dihydroquinoline-6-sulfonate (3.65 g, 6.33 mmol) and N-(4-methoxybenzyl)isoxazol-3-amine (1.358 g, 6.65 mmol) was flushed with nitrogen and then charged with THF (63.3 ml) and cooled to 0° C. Lithium bis(trimethylsilyl)amide (1.0M in THF) (6.97 ml, 6.97 mmol) was added slowly, and the solution was stirred at 0° C. for 45 minutes until complete consumption of starting material. The reaction was quenched with water and extracted (×3) with EtOAc. The combined organics were washed with brine, dried over sodium sulfate, filtered and concentrated in vacuo. The crude solid was triturated in IPA and filtered, washing well with IPA, to yield 1-(5-bromo-2-methoxyphenyl)-N-(isoxazol-3-yl)-N-(4-methoxybenzyl)-2-oxo-1,2-dihydroquinoline-6-sulfonamide (2.65 g, 4.44 mmol, 70.1% yield) as a white solid. m/z (ESI) 596.0 (M+H)+.

Aufarbeitung

  1. customwas flushed with nitrogen
  2. additioncharged with THF (63.3 ml)
  3. customThe reaction was quenched with water
  4. extractionextracted (×3) with EtOAc
  5. washThe combined organics were washed with brine
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customThe crude solid was triturated in IPA
  10. filtrationfiltered
  11. washwashing well with IPA

Quellen und Nachweise

ORD-Eintrag
ord-51dbc7ee6c1441548a6df8abe2fe8946
Quelldatensatz
uspto-grants-2015_12
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09212182B2

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