Acetone → 1-Benzyl-3-[2-benzyloxy-4-(1,1-dimethylheptyl)phenyl]-4-piperidone

HRID 444342Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 444342
[CH2:1]([N:8]1[CH2:13][CH2:12][CH:11]([OH:14])[CH:10]([C:15]2[CH:20]=[CH:19][C:18]([C:21]([CH3:29])([CH3:28])[CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH3:27])=[CH:17][C:16]=2[O:30][CH2:31][C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CC(C)=O.S(=O)(=O)(O)O.[OH-].[NH4+]>[O-2].[O-2].[O-2].[Cr+6].C(O)(=O)C.O>[CH2:1]([N:8]1[CH2:13][CH2:12][C:11](=[O:14])[CH:10]([C:15]2[CH:20]=[CH:19][C:18]([C:21]([CH3:28])([CH3:29])[CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH3:27])=[CH:17][C:16]=2[O:30][CH2:31][C:32]2[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=2)[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

8

Edukt 4

HCID 180AcetoneHCID 1118Sulfuric AcidHCID 14923Ammonium HydroxideHCID 204997751-Benzyl-3-[2-benzyloxy-4-(1,1-dimethylheptyl)phenyl]-4-piperidinol

Produkt 1

HCID 204997831-Benzyl-3-[2-benzyloxy-4-(1,1-dimethylheptyl)phenyl]-4-piperidone

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 10219390chromium (VI) trioxideKatalysatorHCID 176Acetic AcidLösungsmittelHCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
18 °C

Versuchsvorschrift

To a cooled solution of 24.8 g. (50 mmols.) of 1-benzyl-3-[2-benzyloxy-4-(1,1-dimethylheptyl)phenyl]-4-piperidinol, 100 ml. of acetone, 6.0 g. (60 mmols.) of chromium trioxide, 15 ml. of water and 20 ml. of acetic acid is added dropwise 20 ml. of concentrated sulfuric acid at such a rate as to maintain the temperature at 5° C. The reaction mixture is stirred 5 hours longer (t<18° C.) and then neutralized with concentrated ammonium hydroxide. The reaction mixture is extracted with 500 ml. of ether, the ether extract washed once with saturated sodium chloride, dried over magnesium sulfate and evaporated. Purification is accomplished via rapid column chromatography on 100 g. of silica gel eluted with ether to yield the title compound.

Aufarbeitung

  1. extractionThe reaction mixture is extracted with 500 ml
  2. extractionof ether, the ether extract
  3. washwashed once with saturated sodium chloride
  4. dry with materialdried over magnesium sulfate
  5. customevaporated
  6. customPurification
  7. washof silica gel eluted with ether

Quellen und Nachweise

ORD-Eintrag
ord-2c315bb8d34547369374ad190cd9130c
Quelldatensatz
uspto-grants-1981_04
Patentnummer
US04263438

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