Triethylamine → 2-oxo-1,3-dioxolan-4-yl 2-ethoxy-1-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-1H-benzimidazole-7-carboxylate

HRID 2101479

Reaktionsgleichung

Reaktionsgleichung von HRID 2101479
[CH2:1]([O:3][C:4]1[N:8]([CH2:9][C:10]2[CH:15]=[CH:14][C:13]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[C:22]3[NH:26][C:25](=[O:27])[O:24][N:23]=3)=[CH:12][CH:11]=2)[C:7]2[C:28]([C:32]([OH:34])=[O:33])=[CH:29][CH:30]=[CH:31][C:6]=2[N:5]=1)[CH3:2].Cl[CH:36]1[CH2:40][O:39][C:38](=[O:41])[O:37]1.C(N(CC)CC)C>CN(C=O)C>[CH2:1]([O:3][C:4]1[N:8]([CH2:9][C:10]2[CH:11]=[CH:12][C:13]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[C:22]3[NH:26][C:25](=[O:27])[O:24][N:23]=3)=[CH:14][CH:15]=2)[C:7]2[C:28]([C:32]([O:34][CH:36]3[CH2:40][O:39][C:38](=[O:41])[O:37]3)=[O:33])=[CH:29][CH:30]=[CH:31][C:6]=2[N:5]=1)[CH3:2]

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 980754-Chloro-1,3-dioxolan-2-oneHCID 135415867Azilsartan

Produkt 1

HCID 1358486702-oxo-1,3-dioxolan-4-yl 2-ethoxy-1-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-1H-benzimidazole-7-carboxylateAusbeute 22 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A solution of 2-ethoxy-1-{[2′-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-1H-benzimidazole-7-carboxylic acid (1.0 g), 4-chloro-1,3-dioxolan-2-one (0.41 g) and triethylamine in DMF was stirred at 90° C. for 12 hrs. The reaction mixture was concentrated, and the residue was dissolved in chloroform and iN hydrochloric acid. The organic layer was separated, dried over anhydrous sodium sulfate and concentrated. The residue was purified by silica gel column chromatography to give the title compound (0.20 g, 22%) as a colorless solid.

Aufarbeitung

  1. concentrationThe reaction mixture was concentrated
  2. dissolutionthe residue was dissolved in chloroform and iN hydrochloric acid
  3. customThe organic layer was separated
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated
  6. customThe residue was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-13b40efadc174536aadf7664d9d2fef3
Quelldatensatz
uspto-grants-2009_08
Patentnummer
US07572920B2

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