Methanamine, N-methoxy-, hydrochloride (1:1) → N,2-dimethoxy-N-methyl-2-(4-(1-(tris(4-methoxyphenyl)methyl)-1H-pyrazol-4-yl)phenyl)acetamide

HRID 56512

Reaktionsgleichung

Reaktionsgleichung von HRID 56512
[CH3:1][O:2][CH:3]([C:7]1[CH:12]=[CH:11][C:10]([C:13]2[CH:14]=[N:15][N:16]([C:18]([C:35]3[CH:40]=[CH:39][C:38]([O:41][CH3:42])=[CH:37][CH:36]=3)([C:27]3[CH:32]=[CH:31][C:30]([O:33][CH3:34])=[CH:29][CH:28]=3)[C:19]3[CH:24]=[CH:23][C:22]([O:25][CH3:26])=[CH:21][CH:20]=3)[CH:17]=2)=[CH:9][CH:8]=1)[C:4]([O-])=[O:5].[K+].C(N(C(C)C)CC)(C)C.COCCN(S(F)(F)F)CCOC.Cl.[CH3:67][NH:68][O:69][CH3:70]>CN(C=O)C.O>[CH3:70][O:69][N:68]([CH3:67])[C:4](=[O:5])[CH:3]([O:2][CH3:1])[C:7]1[CH:8]=[CH:9][C:10]([C:13]2[CH:14]=[N:15][N:16]([C:18]([C:19]3[CH:20]=[CH:21][C:22]([O:25][CH3:26])=[CH:23][CH:24]=3)([C:27]3[CH:28]=[CH:29][C:30]([O:33][CH3:34])=[CH:31][CH:32]=3)[C:35]3[CH:40]=[CH:39][C:38]([O:41][CH3:42])=[CH:37][CH:36]=3)[CH:17]=2)=[CH:11][CH:12]=1

Komponenten

7

Edukt 4

HCID 81138Methanamine, N-methoxy-, hydrochloride (1:1)HCID 81531DiisopropylethylamineHCID 2734690(Bis(2-methoxyethyl)amino)sulfur trifluorideHCID 67388959potassium 2-methoxy-2-(4-(1-(tris(4-methoxyphenyl)methyl)-1H-pyrazol-4-yl)phenyl)acetate

Produkt 1

HCID 58432018N,2-dimethoxy-N-methyl-2-(4-(1-(tris(4-methoxyphenyl)methyl)-1H-pyrazol-4-yl)phenyl)acetamideAusbeute 37,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To an ice-cold solution of potassium 2-methoxy-2-(4-(1-(tris(4-methoxyphenyl)methyl)-1H-pyrazol-4-yl)phenyl)acetate (1.25 g, 2.1 mmol) in anhydrous DMF (10 mL) under argon was added diisopropylethylamine (0.54 mL, 3.1 mmol) and bis(2-methoxyethyl)aminosulfur trifluoride (0.46 mL, 2.5 mmol) dropwise. The reaction was stirred for 30 min then N,O-dimethylhydroxylamine hydrochloride (0.303 g, 3.1 mmol) was added. After stirring for a further 15 min over an ice bath, the mixture was allowed to warm to room temperature and stirred for 3.5 hrs. H2O was added and the mixture was extracted with EtOAc. The combined organics were washed with H2O, saturated aqueous NH4Cl, saturated aqueous NaHCO3, and brine then dried over Na2SO4 and concentrated in vacuo. Purification by chromatography (45-90% EtOAc-hexanes; EtOAc containing 1% Et3N) to give N,2-dimethoxy-N-methyl-2-(4-(1-(tris(4-methoxyphenyl)methyl)-1H-pyrazol-4-yl)phenyl)acetamide (0.478 g from two reactions, 32% yield overall).

Aufarbeitung

  1. stirringAfter stirring for a further 15 min over an ice bath
  2. stirringstirred for 3.5 hrs
  3. extractionthe mixture was extracted with EtOAc
  4. washThe combined organics were washed with H2O, saturated aqueous NH4Cl, saturated aqueous NaHCO3, and brine
  5. dry with materialthen dried over Na2SO4
  6. concentrationconcentrated in vacuo
  7. customPurification by chromatography (45-90% EtOAc-hexanes; EtOAc containing 1% Et3N)

Quellen und Nachweise

ORD-Eintrag
ord-8f416dc8b4d6400f92d6519f712cb4e7
Quelldatensatz
uspto-grants-2016_09
Patentnummer
US09434707B2

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