1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → (E)-6-(3-Oxo-3-(3-(thiophen-2-ylmethoxy)azetidin-1-yl)prop-1-enyl)-1H-imidazo[4,5-b]pyridin-2(3H)-one

HRID 633987

Reaktionsgleichung

Reaktionsgleichung von HRID 633987
Cl.[S:2]1[CH:6]=[CH:5][CH:4]=[C:3]1[CH2:7][O:8][CH:9]1[CH2:12][NH:11][CH2:10]1.CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.C(N(C(C)C)CC)(C)C.Cl.[O:44]=[C:45]1[NH:58][C:48]2=[N:49][CH:50]=[C:51](/[CH:53]=[CH:54]/[C:55](O)=[O:56])[CH:52]=[C:47]2[NH:46]1>CN(C)C=O>[O:56]=[C:55]([N:11]1[CH2:12][CH:9]([O:8][CH2:7][C:3]2[S:2][CH:6]=[CH:5][CH:4]=2)[CH2:10]1)/[CH:54]=[CH:53]/[C:51]1[CH:52]=[C:47]2[NH:46][C:45](=[O:44])[NH:58][C:48]2=[N:49][CH:50]=1

Komponenten

7

Edukt 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 671545443-(2-Thienylmethoxy)azetidine hydrochlorideHCID 70926863(E)-3-(2-Oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-6-yl)acrylic acid hydrochloride

Produkt 1

HCID 52950704(E)-6-(3-Oxo-3-(3-(thiophen-2-ylmethoxy)azetidin-1-yl)prop-1-enyl)-1H-imidazo[4,5-b]pyridin-2(3H)-oneAusbeute 14,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

3-(Thiophen-2-ylmethoxy)-azetidine hydrochloride (127 mg, 0.62 mmol), EDCI (120 mg, 0.62 mmol), HOBt (86 mg, 0.62 mmol) and diisopropylethylamine (180 μL, 1.03 mmol) were successively added to a solution of (E)-3-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-6-yl)acrylic acid hydrochloride (100 mg, 0.41 mmol) in dimethylformamide (10 mL) at room temperature. The reaction mixture was stirred overnight then partitioned between ethyl acetate (20 mL) and water (30 mL). The aqueous layer was separated and successively extracted with ethyl acetate (2×20 mL) and dichloromethane (2×20 mL). The combined organic phases were washed with a saturated solution of sodium chloride (3×30 mL), dried over sodium sulfate, filtered and concentrated to dryness. The residue was purified by chromatography on silica gel using dichloromethane/methanol (98:2 to 93:7) as eluent. The residue was triturated in pentane to afford the title product as a pale orange solid (21 mg, 14%).

Aufarbeitung

  1. customthen partitioned between ethyl acetate (20 mL) and water (30 mL)
  2. customThe aqueous layer was separated
  3. extractionsuccessively extracted with ethyl acetate (2×20 mL) and dichloromethane (2×20 mL)
  4. washThe combined organic phases were washed with a saturated solution of sodium chloride (3×30 mL)
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated to dryness
  8. customThe residue was purified by chromatography on silica gel
  9. customThe residue was triturated in pentane

Quellen und Nachweise

ORD-Eintrag
ord-b7e1c586e0e24d939a346b37882a0d2f
Quelldatensatz
uspto-grants-2016_04
Patentnummer
US09321769B2

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