Reaktion #1079963

Reaktionsgleichung

2-adamantylcyclopentadiene

methanol

acetone

pyrrolidine

→

3-(2-adamantyl)-6,6-dimethylfulvene

Lösungsmittel

H2O

acetic acid

tetrahydrofuran

ethanol

diethyl ether

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe organic layer was isolated
2. 2
   Extraktionthe aqueous layer extracted with diethyl ether (3×40 mL)
3. 3
   ExtraktionThe combined organic layers were extracted with H2O (3×25 mL) and with 10% aqueous NaOH (3×25 mL)
4. 4
   Trocknendried over MgSO4
5. 5
   Filtrationfiltered
6. 6
   SonstigeThe obtained yellow solid was further purified by overnight
7. 7
   ExtraktionSoxhlet extraction by 150 mL methanol
8. 8
   SonstigeThe precipitate in the filtrate was isolated by filtration at 0° C.
9. 9
   Sonstigein vacuo drying

Vorschrift

To 2-adamantylcyclopentadiene (6.06 g, 30.3 mmol) was added 50 mL methanol, 50 mL ethanol, 20 mL tetrahydrofuran, 36 mL acetone (0.49 mol) and 0.5 mL pyrrolidine (0.006 mol). After stirring for 48 hours, 5 mL of acetic acid were injected, followed by 200 mL H2O and 200 mL diethyl ether. The organic layer was isolated and the aqueous layer extracted with diethyl ether (3×40 mL). The combined organic layers were extracted with H2O (3×25 mL) and with 10% aqueous NaOH (3×25 mL), dried over MgSO4, filtered and rotavapped. The obtained yellow solid was further purified by overnight Soxhlet extraction by 150 mL methanol. The precipitate in the filtrate was isolated by filtration at 0° C., and in vacuo drying: 4.54 g (62.5%) of 3-(2-adamantyl)-6,6-dimethylfulvene, as a yellow powder. Elemental analysis calculated for C18H24: C, 89.94; H, 10.06. Found: C, 82.23, 82.23; H, 8.78, 8.82.

Quelle