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Diisopropylethylamine → N-[(3R)-1-Azabicyclo[2.2.2]oct-3-yl]-5-nitro-1-benzofuran-2-carboxamide

HRID 335584
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 335584
[N+:1]([C:4]1[CH:5]=[CH:6][C:7]2[O:11][C:10]([C:12]([OH:14])=O)=[CH:9][C:8]=2[CH:15]=1)([O-:3])=[O:2].Cl.Cl.[NH2:18][C@@H:19]1[CH:24]2[CH2:25][CH2:26][N:21]([CH2:22][CH2:23]2)[CH2:20]1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C(N(CC)C(C)C)(C)C>CN(C=O)C>[N:21]12[CH2:26][CH2:25][CH:24]([CH2:23][CH2:22]1)[C@@H:19]([NH:18][C:12]([C:10]1[O:11][C:7]3[CH:6]=[CH:5][C:4]([N+:1]([O-:3])=[O:2])=[CH:15][C:8]=3[CH:9]=1)=[O:14])[CH2:20]2
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Komponenten

6

Edukt 4

HCID 81531DiisopropylethylamineHCID 14771285-Nitrobenzofuran-2-carboxylic acidHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 12494972(R)-(+)-3-Aminoquinuclidine Dihydrochloride

Produkt 1

HCID 59341432
N-[(3R)-1-Azabicyclo[2.2.2]oct-3-yl]-5-nitro-1-benzofuran-2-carboxamide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

1248 mg (6.03 mmol) of 5-nitrobenzofuran-2-carboxylic acid, 1000 mg (5.02 mmol) of (R)-3-aminoquinuclidine dihydrochloride, 2291 mg (6.03 mmol) of HATU, 2250 mg (18.08 mmol) of N,N-diisopropylethylamine and 15 ml of DMF are reacted according to the general procedure (variant B). DMF is removed under reduced pressure. The reaction mixture is taken up in methanol and stirred together with acidic ion exchange resin (Dowex WX2-200) for about 40 min. The loaded ion exchanger is washed six times with in each case 100 ml of methanol. It is then eluted using methanol/triethylamine 99:1 to 90:10. The solvent is removed under reduced pressure. The product is taken up in 1N aqueous sodium hydroxide solution and extracted three times with ethyl acetate. The extract is dried on magnesium sulfate. 1100 mg (69% of theory) of the title compound are isolated.

Aufarbeitung

  1. customDMF is removed under reduced pressure
  2. washThe loaded ion exchanger is washed six times with in each case 100 ml of methanol
  3. washIt is then eluted
  4. customThe solvent is removed under reduced pressure
  5. extractionextracted three times with ethyl acetate
  6. customThe extract is dried on magnesium sulfate

Quellen und Nachweise

ORD-Eintrag
ord-93c161ae0b3f4411a6e690a4cfcdf75c
Quelldatensatz
uspto-grants-2014_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08884017B2

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