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Boron tribromide → 5-(3-[(1S)-2-Hydroxy-1-methylethoxy]-5-{5-[(5S)-5-methyl-4,5-dihydro-1,3-oxazol-2-yl]-1H-pyrrol-2-yl}phenoxy)-N-methylpyridine-2-carboxamide

HRID 909664
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 909664
C[O:2][CH2:3][C@H:4]([CH3:34])[O:5][C:6]1[CH:7]=[C:8]([CH:20]=[C:21]([C:23]2[NH:24][C:25]([C:28]3[O:29][C@@H:30]([CH3:33])[CH2:31][N:32]=3)=[CH:26][CH:27]=2)[CH:22]=1)[O:9][C:10]1[CH:11]=[CH:12][C:13]([C:16]([NH:18][CH3:19])=[O:17])=[N:14][CH:15]=1.B(Br)(Br)Br.C(=O)([O-])O.[Na+]>C(Cl)Cl>[OH:2][CH2:3][C@H:4]([CH3:34])[O:5][C:6]1[CH:7]=[C:8]([CH:20]=[C:21]([C:23]2[NH:24][C:25]([C:28]3[O:29][C@@H:30]([CH3:33])[CH2:31][N:32]=3)=[CH:26][CH:27]=2)[CH:22]=1)[O:9][C:10]1[CH:11]=[CH:12][C:13]([C:16]([NH:18][CH3:19])=[O:17])=[N:14][CH:15]=1
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Komponenten

5

Edukt 3

HCID 25134Boron tribromideHCID 516892Sodium BicarbonateHCID 666809955-(3-[(1S)-2-Methoxy-1-methylethoxy]-5-{5-[(5S)-5-methyl-4,5-dihydro-1,3-oxazol-2-yl]-1H-pyrrol-2-yl}phenoxy)-N-methylpyridine-2-carboxamide

Produkt 1

HCID 666825015-(3-[(1S)-2-Hydroxy-1-methylethoxy]-5-{5-[(5S)-5-methyl-4,5-dihydro-1,3-oxazol-2-yl]-1H-pyrrol-2-yl}phenoxy)-N-methylpyridine-2-carboxamideAusbeute 69 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

5-(3-[(1S)-2-Methoxy-1-methylethoxy]-5-{5-[(5S)-5-methyl-4,5-dihydro-1,3-oxazol-2-yl]-1H-pyrrol-2-yl}phenoxy)-N-methylpyridine-2-carboxamide (176 mg, 0.38 mmol) synthesized in Example (123b) was dissolved in methylene chloride (5 mL), and boron tribromide (1.0 mol/L methylene chloride solution, 0.50 mL, 0.50 mmol) was added at −78° C. Subsequently, the temperature was brought back to room temperature, followed by stirring for 1 hour. To the reaction solution, a saturated aqueous sodium hydrogencarbonate solution was added, and extraction was carried out with methylene chloride. The organic layer was washed with saturated brine, and subsequently dried over sodium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: methanol/methylene chloride=0%-5%) to afford the desired compound (118 mg, yield 69%) as a white solid.

Aufarbeitung

  1. customwas brought back to room temperature
  2. extractionextraction
  3. washThe organic layer was washed with saturated brine
  4. dry with materialsubsequently dried over sodium sulfate
  5. distillationThe solvent was distilled off under reduced pressure
  6. customthe resulting residue was purified
  7. washsilica gel column chromatography (elution solvent: methanol/methylene chloride=0%-5%)

Quellen und Nachweise

ORD-Eintrag
ord-6771ee187b35453caf9e2bbe78a7dec5
Quelldatensatz
uspto-grants-2011_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08017610B2

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