Benzaldehyde, 3,5-dimethyl- → N-(5-((1R,2S)-2-(3,5-Dimethylbenzylamino)-1-hydroxypropyl)-2-hydroxyphenyl)methanesulfonamide

HRID 218118

Reaktionsgleichung

Reaktionsgleichung von HRID 218118
[NH2:1][C@@H:2]([CH3:17])[C@@H:3]([C:5]1[CH:6]=[CH:7][C:8]([OH:16])=[C:9]([NH:11][S:12]([CH3:15])(=[O:14])=[O:13])[CH:10]=1)[OH:4].[CH3:18][C:19]1[CH:20]=[C:21]([CH:24]=[C:25]([CH3:27])[CH:26]=1)[CH:22]=O>CO>[CH3:18][C:19]1[CH:26]=[C:25]([CH:24]=[C:21]([CH3:22])[CH:20]=1)[CH2:27][NH:1][C@@H:2]([CH3:17])[C@@H:3]([C:5]1[CH:6]=[CH:7][C:8]([OH:16])=[C:9]([NH:11][S:12]([CH3:15])(=[O:14])=[O:13])[CH:10]=1)[OH:4]

Komponenten

4

Edukt 2

HCID 34225Benzaldehyde, 3,5-dimethyl-HCID 58280635N-(5-((1R,2S)-2-Amino-1-hydroxypropyl)-2-hydroxyphenyl)methanesulfonamide

Produkt 1

HCID 44628484N-(5-((1R,2S)-2-(3,5-Dimethylbenzylamino)-1-hydroxypropyl)-2-hydroxyphenyl)methanesulfonamideAusbeute 33 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

Borane-pyridine complex (160 μL, 1.50 mmol) was added to a methanol solution (5 mL) of an amine (3) (131 mg, 0.50 mmol) and 3,5-dimethylbenzaldehyde (90 μL, 0.65 mmol) at 40° C. and the mixture was stirred for 1.5 hours. The reaction mixture was allowed to cool to room temperature and extracted after addition of water with a mixed solvent (ethyl acetate: methanol=10:1), and the organic layer was washed with saturated aqueous sodium chloride solution. The organic layer was dried and concentrated, and the crude product obtained was purified by amine silica gel column chromatography (eluant:chloroform:methanol=7:1), to give a desired amine (8) as a white solid (62 mg, yield 33%).

Aufarbeitung

  1. extractionextracted
  2. additionafter addition of water with a mixed solvent (ethyl acetate: methanol=10:1)
  3. washthe organic layer was washed with saturated aqueous sodium chloride solution
  4. customThe organic layer was dried
  5. concentrationconcentrated
  6. customthe crude product obtained
  7. customwas purified by amine silica gel column chromatography (eluant:chloroform:methanol=7:1)

Quellen und Nachweise

ORD-Eintrag
ord-f6b63811fd6c4cf3b29ec7d1f9687130
Quelldatensatz
uspto-grants-2012_06
Patentnummer
US08198330B2

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