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tert-butyl (3R,5E)-3-({[(1S)-2,2-dimethyl-1-(benzyloxycarbonyl)propyl]amino}carbonyl)-6-[3-methyl-(4-phenyl)phenyl]hex-5-enoate → tert-butyl (3R)-3-({[(1S)-1-(carboxy)-2,2-dimethylpropyl]amino}carbonyl)-6-[3-methyl-(4-phenyl)phenyl]hexanoate

HRID 1700992
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1700992
[CH3:1][C:2]([CH3:43])([CH3:42])[C@H:3]([NH:14][C:15]([C@H:17]([CH2:26]/[CH:27]=[CH:28]/[C:29]1[CH:34]=[CH:33][C:32]([C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)=[C:31]([CH3:41])[CH:30]=1)[CH2:18][C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])=[O:16])[C:4]([O:6]CC1C=CC=CC=1)=[O:5]>C(O)C.O.[Pd]>[CH3:1][C:2]([CH3:43])([CH3:42])[C@H:3]([NH:14][C:15]([C@H:17]([CH2:26][CH2:27][CH2:28][C:29]1[CH:34]=[CH:33][C:32]([C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)=[C:31]([CH3:41])[CH:30]=1)[CH2:18][C:19]([O:21][C:22]([CH3:23])([CH3:24])[CH3:25])=[O:20])=[O:16])[C:4]([OH:6])=[O:5]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

4

Edukt 1

HCID 59875769tert-butyl (3R,5E)-3-({[(1S)-2,2-dimethyl-1-(benzyloxycarbonyl)propyl]amino}carbonyl)-6-[3-methyl-(4-phenyl)phenyl]hex-5-enoate

Produkt 1

HCID 59875725tert-butyl (3R)-3-({[(1S)-1-(carboxy)-2,2-dimethylpropyl]amino}carbonyl)-6-[3-methyl-(4-phenyl)phenyl]hexanoateAusbeute 97 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23938PalladiumKatalysatorHCID 19096565Water ethanol
Lösungsmittel

Versuchsvorschrift

A solution of tert-butyl (3R,5E)-3-({[(1S)-2,2-dimethyl-1-(benzyloxycarbonyl)propyl]amino}carbonyl)-6-[3-methyl-(4-phenyl)phenyl]hex-5-enoate (2.205 g, 3.78 mmol) in ethanol/water=10:1 (44 mL) was hydrogenated over 10% palladium on charcoal at 3 bar and room temperature for 6 h. The mixture was filtered through Arbocel filter aid, washing well with ethanol. The filtrate was concentrated under reduced pressure. The residue was dissolved in toluene and evaporated (three times), dissolved in ether and evaporated (twice), and finally dissolved in ether and precipitated as an oil by the addition of hexane. Removal of the solvent under reduced pressure gave tert-butyl (3R)-3-({[(1S)-2,2-dimethyl-1-(carboxy)propyl]amino}carbonyl)-6-[3-methyl-(4-phenyl)phenyl]hexanoate (1.817 g, 97%) as a colourless foam, m.p. 51-56° C.

Aufarbeitung

  1. filtrationThe mixture was filtered through Arbocel
  2. filtrationfilter aid
  3. washwashing well with ethanol
  4. concentrationThe filtrate was concentrated under reduced pressure
  5. dissolutionThe residue was dissolved in toluene
  6. customevaporated (three times)
  7. dissolutiondissolved in ether
  8. customevaporated (twice), and
  9. dissolutionfinally dissolved in ether
  10. customprecipitated as an oil by the addition of hexane
  11. customRemoval of the solvent under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-fa7abc67527d421dbd4597d9fd01cc37
Quelldatensatz
uspto-grants-2002_02
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06350907B1

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