1-Bromo-3-methylbutane → 4-((3,5-dimethylisoxazol-4-yl)methoxy)-N-isopentyl-N-(5-isopropylpyridin-2-yl)benzenesulfonamide

HRID 594164

Reaktionsgleichung

Reaktionsgleichung von HRID 594164
[CH3:1][C:2]1[C:6]([CH2:7][O:8][C:9]2[CH:14]=[CH:13][C:12]([S:15]([NH:18][C:19]3[CH:24]=[CH:23][C:22]([CH:25]([CH3:27])[CH3:26])=[CH:21][N:20]=3)(=[O:17])=[O:16])=[CH:11][CH:10]=2)=[C:5]([CH3:28])[O:4][N:3]=1.C(N=C(N(C)C)N(C)C)(C)(C)C.Br[CH2:42][CH2:43][CH:44]([CH3:46])[CH3:45]>C(#N)C>[CH3:1][C:2]1[C:6]([CH2:7][O:8][C:9]2[CH:10]=[CH:11][C:12]([S:15]([N:18]([CH2:42][CH2:43][CH:44]([CH3:46])[CH3:45])[C:19]3[CH:24]=[CH:23][C:22]([CH:25]([CH3:26])[CH3:27])=[CH:21][N:20]=3)(=[O:17])=[O:16])=[CH:13][CH:14]=2)=[C:5]([CH3:28])[O:4][N:3]=1

Komponenten

5

Edukt 3

HCID 78911-Bromo-3-methylbutaneHCID 35715812-tert-Butyl-1,1,3,3-tetramethylguanidineHCID 898760154-((3,5-dimethylisoxazol-4-yl)methoxy)-N-(5-isopropylpyridin-2-yl)benzenesulfonamide

Produkt 1

HCID 721946914-((3,5-dimethylisoxazol-4-yl)methoxy)-N-isopentyl-N-(5-isopropylpyridin-2-yl)benzenesulfonamideAusbeute 27,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Reaktionsbedingungen

Temperatur
20 °C

Versuchsvorschrift

To a stirred solution of 4-((3,5-dimethylisoxazol-4-yl)methoxy)-N-(5-isopropylpyridin-2-yl)benzenesulfonamide (150 mg, 0.37 mmol) in acetonitrile (4 mL) was added 2-(tert-butyl)-1,1,3,3-tetramethylguanidine (128 mg, 0.75 mmol). The reaction mixture was stirred at 20° C. for 1 hour. 1-Bromo-3-methylbutane (0.09 mL, 0.75 mmol) was then added and the reaction vessel sealed and heated by microwaves to 150° C. for 30 minutes. The reaction mixture was concentrated in vacuo and diluted with ethyl acetate. The organic phase was washed with water, dried using a hydrophobic frit and evaporated in vacuo to give the crude product. The crude was then purified by flash silica (Si) chromatography (0-25% ethyl acetate-cyclohexane gradient). The appropriate fractions were combined and evaporated in vacuo to give the title compound (48 mg) as a yellow oil. LCMS (2 min, HpH) Rt 1.50 min, m/z (ES+) 472 (M+H).

Aufarbeitung

  1. customthe reaction vessel sealed
  2. temperatureheated by microwaves to 150° C. for 30 minutes
  3. concentrationThe reaction mixture was concentrated in vacuo
  4. additiondiluted with ethyl acetate
  5. washThe organic phase was washed with water
  6. customdried
  7. customevaporated in vacuo
  8. customto give the crude product
  9. customThe crude was then purified by flash silica (Si) chromatography (0-25% ethyl acetate-cyclohexane gradient)
  10. customevaporated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-6d5bfe80f5e349348e559bcd410ba2ae
Quelldatensatz
uspto-grants-2016_01
Patentnummer
US09242972B2

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