Acetic Acid → (3R,5R)-tert-butyl 7-(2,5-diphenyl-4-(pyridin-4-yl)-1H-imidazol-1-yl)-3,5-dihydroxyheptanoate

HRID 1268703Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1268703
O=[C:2]([C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1)[CH:3]([NH:10][C:11](=O)[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)[C:4]1[CH:9]=[CH:8][N:7]=[CH:6][CH:5]=1.C(O)(=O)C.[NH2:29][CH2:30][CH2:31][C@H:32]1[O:37]B(C2C=CC=CC=2)[O:35][C@@H:34]([CH2:44][C:45]([O:47][C:48]([CH3:51])([CH3:50])[CH3:49])=[O:46])[CH2:33]1>C(O)C>[C:12]1([C:11]2[N:29]([CH2:30][CH2:31][C@@H:32]([OH:37])[CH2:33][C@@H:34]([OH:35])[CH2:44][C:45]([O:47][C:48]([CH3:49])([CH3:50])[CH3:51])=[O:46])[C:2]([C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=3)=[C:3]([C:4]3[CH:9]=[CH:8][N:7]=[CH:6][CH:5]=3)[N:10]=2)[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1

Komponenten

5

Edukt 3

HCID 176Acetic AcidHCID 11449985t-butyl 2-((4R,6R)-6-(2-aminoethyl)-2-phenyl-1,3,2-dioxaborinan-4-yl)acetateHCID 21075679N-(2-oxo-2-phenyl-1-(pyridin-4-yl)ethyl)benzamide2×

Produkt 1

HCID 58782243(3R,5R)-tert-butyl 7-(2,5-diphenyl-4-(pyridin-4-yl)-1H-imidazol-1-yl)-3,5-dihydroxyheptanoate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

To a solution of N-(2-oxo-2-phenyl-1-(pyridin-4-yl)ethyl)benzamide, 67 (1.6 g) and acetic acid (1.5 mL) in ethanol (50 mL) is added tert-butyl 2-((4R,6R)-6-(2-aminoethyl)-2-phenyl-1,3,2-dioxaborinan-4-yl)acetate (7.9 g). Upon heating under reflux for 16 h, the solution is cooled to room temperature and the solvent is evaporated. The residue is partitioned between saturated aqueous sodium hydrogen carbonate and dichloromethane, the layers separated and the organic phase washed with brine, dried (magnesium sulfate), filtered and concentrated. Purification of the residue via chromatography affords the title compound, 68 (0.35 g).

Aufarbeitung

  1. temperatureUpon heating
  2. temperatureunder reflux for 16 h
  3. customthe solvent is evaporated
  4. customThe residue is partitioned between saturated aqueous sodium hydrogen carbonate and dichloromethane
  5. customthe layers separated
  6. washthe organic phase washed with brine
  7. dry with materialdried (magnesium sulfate)
  8. filtrationfiltered
  9. concentrationconcentrated
  10. customPurification of the residue via chromatography

Quellen und Nachweise

ORD-Eintrag
ord-9a2f3cf842334fdeb5a898b7581690de
Quelldatensatz
uspto-grants-2007_04
Patentnummer
US07199126B2

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