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Dichloromethane → HCID 57009109, Verbindung

HRID 377080
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 377080
Cl[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1C([O-])=O.ClCCl.[CH3:14][O:15][C:16]([C:18]1[C@H:19]2[CH2:27][C@@H:26]3[O:28][C@:25]3([CH3:29])[C@@H:20]2[CH:21]([OH:24])[O:22][CH:23]=1)=[O:17].CCCCCC.[C:36]([O:39]CC)(=[O:38])C>CN(C1C=CN=CC=1)C>[CH3:14][O:15][C:16]([C:18]1[C@H:19]2[CH2:27][C@@H:26]3[O:28][C@:25]3([CH3:29])[C@@H:20]2[C@H:21]([O:24][C:36]([O:39][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)=[O:38])[O:22][CH:23]=1)=[O:17]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 6344DichloromethaneHCID 43688102-ChlorobenzoateHCID 21226206Ethyl acetate hexaneHCID 57213576HCID 57213576, Verbindung

Produkt 1

HCID 57009109HCID 57009109, VerbindungAusbeute 70 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 14284
4-(Dimethylamino)pyridine
Katalysator

Versuchsvorschrift

1.2 mg of DMAP and 0.9 ml of chlorophenylformate were added to a dichloromethane solution containing 1.12 g of a known (4aS,6S,7R,7aR)-6,7-epoxy-1,4a,5,6,7,7a-hexahydro-1-hydroxy-7-methylcyclopenta[c]pyrane-4-carboxylic acid methylester followed by stirring for 1 hour at room temperature. The reaction mixture was then extracted with dichloromethane. After washing the organic phase with dilute hydrochloric acid and brine, it was dried over anhydrous magnesium sulfate. After distilling off the solvent under reduced pressure, the residue was purified by silica gel chromatography to obtain a colorless powder from the hexane-ethyl acetate eluate in the form of (1S,4aS,6S,7R,7aR)-6,7-epoxy-1,4a,5,6,7,7a-hexahydro-7-methyl-1-(phenoxycarbonyloxy)cyclopenta[c]pyrane-4-carboxylic acid methylester (1.16 g, yield: 70%). The physicochemical properties of this compound are as shown below.

Aufarbeitung

  1. extractionThe reaction mixture was then extracted with dichloromethane
  2. washAfter washing the organic phase with dilute hydrochloric acid and brine, it
  3. dry with materialwas dried over anhydrous magnesium sulfate
  4. distillationAfter distilling off the solvent under reduced pressure
  5. customthe residue was purified by silica gel chromatography

Quellen und Nachweise

ORD-Eintrag
ord-2b05438048de4e7aa10bf7307e419070
Quelldatensatz
uspto-grants-2000_02
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US06022888

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