5-(Pentan-2-ylidene)cyclopenta-1,3-diene → HCID 12779343, Verbindung

HRID 495749Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 495749
[CH3:1][C:2]([CH2:8][CH2:9][CH3:10])=[C:3]1[CH:7]=[CH:6][CH:5]=[CH:4]1.[CH3:11][Li]>C1COCC1.CCOCC.O>[CH3:1][C:2]([C:3]1[CH2:7][CH:6]=[CH:5][CH:4]=1)([CH3:11])[CH2:8][CH2:9][CH3:10]

Komponenten

6

Edukt 2

HCID 129395315-(Pentan-2-ylidene)cyclopenta-1,3-dieneHCID 178418348HCID 178418348, Verbindung

Produkt 1

HCID 12779343HCID 12779343, VerbindungAusbeute 82 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 3283Diethyl EtherLösungsmittel2×HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of 7.00 g (52.2 mmol) of 6-methyl-6-propylfulvene in 40 ml of THF, 50.3 ml (57.3 mmol) of an ether solution of methyllithium was dropwise added in a nitrogen atmosphere with ice cooling, followed by stirring at room temperature for one night. After the reaction solution was diluted with 100 ml of ether, 30 ml of water was added. The separated organic phase was washed with water and a saturated saline solution, then dried over magnesium sulfate and filtered. From the filtrate, the solvent was removed under reduced pressure to obtain a liquid. The liquid was subjected to vacuum distillation (75° C./5-7 mmHg) to obtain 6.40 g (42.6 mmol) of a light yellow liquid (yield: 82%). The analyzed values are given below.

Aufarbeitung

  1. additionwas added
  2. washThe separated organic phase was washed with water
  3. dry with materiala saturated saline solution, then dried over magnesium sulfate
  4. filtrationfiltered
  5. customFrom the filtrate, the solvent was removed under reduced pressure
  6. customto obtain a liquid
  7. distillationThe liquid was subjected to vacuum distillation (75° C./5-7 mmHg)

Quellen und Nachweise

ORD-Eintrag
ord-b63fa2695b904b37ab31d082abaf46a6
Quelldatensatz
uspto-grants-2005_09
Patentnummer
US06939928B1

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