Triethylamine → 2,2-Dimethyl-propionic acid 3-oxo-4-(tetrahydro-pyran-4-ylmethyl)-2-(2,4,6-trimethyl-phenyl)-cyclopent-1-enyl ester

HRID 509160Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 509160
[O:1]1[CH2:6][CH2:5][CH:4]([CH2:7][CH:8]2[CH2:12][C:11](=[O:13])[CH:10]([C:14]3[C:19]([CH3:20])=[CH:18][C:17]([CH3:21])=[CH:16][C:15]=3[CH3:22])[C:9]2=[O:23])[CH2:3][CH2:2]1.C(N(CC)CC)C.[C:31](Cl)(=[O:36])[C:32]([CH3:35])([CH3:34])[CH3:33]>ClCCl>[O:23]=[C:9]1[CH:8]([CH2:7][CH:4]2[CH2:3][CH2:2][O:1][CH2:6][CH2:5]2)[CH2:12][C:11]([O:13][C:31](=[O:36])[C:32]([CH3:35])([CH3:34])[CH3:33])=[C:10]1[C:14]1[C:15]([CH3:22])=[CH:16][C:17]([CH3:21])=[CH:18][C:19]=1[CH3:20]

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 62493Pivaloyl chlorideHCID 462219734-(Tetrahydro-pyran-4-ylmethyl)-2-(2,4,6-trimethyl-phenyl)-cyclopentane-1,3-dione

Produkt 1

HCID 445554092,2-Dimethyl-propionic acid 3-oxo-4-(tetrahydro-pyran-4-ylmethyl)-2-(2,4,6-trimethyl-phenyl)-cyclopent-1-enyl esterAusbeute 102,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of 4-(tetrahydro-pyran-4-ylmethyl)-2-(2,4,6-trimethyl-phenyl)-cyclopentane-1,3-dione (100 mg, 0.25 mmol) in dichloromethane (5 ml) and triethylamine (140 μl, 1 mmol) is added the pivaloyl chloride (91 μl, 1 mmol) at room temperature. The reaction mixture is stirred overnight at room temperature. Silica gel is added to the crude reaction mixture, the solvent is evaporated under reduced pressure and the residue is purified by flash chromatography on silica gel to give 2,2-dimethyl-propionic acid 3-oxo-4-(tetrahydro-pyran-4-ylmethyl)-2-(2,4,6-trimethyl-phenyl)-cyclopent-1-enyl ester (102 mg).

Aufarbeitung

  1. additionSilica gel is added to the crude
  2. customreaction mixture
  3. customthe solvent is evaporated under reduced pressure
  4. customthe residue is purified by flash chromatography on silica gel

Quellen und Nachweise

ORD-Eintrag
ord-70f0fd9eb0d74beda6bad09b0455f174
Quelldatensatz
uspto-grants-2015_08
Patentnummer
US09096560B2

Notizen zur Reaktion

Wird geladen…