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Sodium periodate → 2-((5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-(cyclopropylmethyl)-2-oxo-3-(2-(triisopropylsilyloxy)ethyl)piperidin-3-yl)acetaldehyde

HRID 1048270
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1048270
[CH2:1]([C:4]1([CH2:29][CH2:30][O:31][Si:32]([CH:39]([CH3:41])[CH3:40])([CH:36]([CH3:38])[CH3:37])[CH:33]([CH3:35])[CH3:34])[CH2:9][C@H:8]([C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([Cl:16])[CH:11]=2)[C@@H:7]([C:17]2[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=2)[N:6]([CH2:24][CH:25]2[CH2:27][CH2:26]2)[C:5]1=[O:28])[CH:2]=C.I([O-])(=O)(=O)=[O:43].[Na+]>C1COCC1.O.[Os](=O)(=O)(=O)=O>[Cl:16][C:12]1[CH:11]=[C:10]([C@@H:8]2[C@@H:7]([C:17]3[CH:18]=[CH:19][C:20]([Cl:23])=[CH:21][CH:22]=3)[N:6]([CH2:24][CH:25]3[CH2:26][CH2:27]3)[C:5](=[O:28])[C:4]([CH2:1][CH:2]=[O:43])([CH2:29][CH2:30][O:31][Si:32]([CH:33]([CH3:35])[CH3:34])([CH:39]([CH3:40])[CH3:41])[CH:36]([CH3:38])[CH3:37])[CH2:9]2)[CH:15]=[CH:14][CH:13]=1
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Komponenten

6

Edukt 2

HCID 23667635Sodium periodateHCID 58573657(5R,6S)-3-Allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-(cyclopropylmethyl)-3-(2-(triisopropylsilyloxy)ethyl)piperidin-2-one

Produkt 1

HCID 585735562-((5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-(cyclopropylmethyl)-2-oxo-3-(2-(triisopropylsilyloxy)ethyl)piperidin-3-yl)acetaldehyde

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 30318
Osmium Tetroxide
Katalysator
HCID 962WaterLösungsmittel
HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of 1.28 g (2.08 mmol) of (5R,6S)-3-allyl-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-(cyclopropylmethyl)-3-(2-(triisopropylsilyloxy)ethyl)piperidin-2-one (Example 69, Step A, mixture of diastereomers) in THF (50 mL) and water (17.5 mL) was added a catalytic amount of osmium tetroxide. After 25 min, 1.34 g (6.25 mmol) of sodium periodate was added. The resulting light brown slurry was stirred for 19 h and then was filtered through a fitted funnel. The filtrate was partially concentrated under reduced pressure, then was diluted with water and extracted with ethyl acetate (2×). The combined organic layers were washed with saturated aqueous sodium thiosulfate and then saturated aqueous sodium chloride. The organic layer was dried over Na2SO4, filtered and the filtrate was concentrated. The crude title compound (mixture of C-3 epimers) was used directly in the next step.

Aufarbeitung

  1. filtrationwas filtered through a fitted funnel
  2. concentrationThe filtrate was partially concentrated under reduced pressure
  3. additionwas diluted with water
  4. extractionextracted with ethyl acetate (2×)
  5. washThe combined organic layers were washed with saturated aqueous sodium thiosulfate
  6. dry with materialThe organic layer was dried over Na2SO4
  7. filtrationfiltered
  8. concentrationthe filtrate was concentrated

Quellen und Nachweise

ORD-Eintrag
ord-74bf37d6399e4f15ab4a9ab34bba4f20
Quelldatensatz
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08569341B2

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