Potassium Carbonate → HCID 118588387, Verbindung
Reaktionsgleichung
C[Si]([C:5]#[C:6][C:7]1[CH:22]=[CH:21][C:10]([C:11]([O:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH3:20])=[O:12])=[CH:9][CH:8]=1)(C)C.C(=O)([O-])[O-].[K+].[K+]>O1CCCC1.CO>[C:6]([C:7]1[CH:22]=[CH:21][C:10]([C:11]([O:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH3:20])=[O:12])=[CH:9][CH:8]=1)#[CH:5]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- -10 °C
Versuchsvorschrift
Heptyl 4-[(trimethylsilyl)ethynyl]benzoate (3a) (10.4 g, 32.8 mmol) was dissolved in tetrahydrofuran/methanol (3/1, v/v) (400 mL), potassium carbonate (1.00 g, 7.24 mmol) was added, and the mixture was stirred at −10° C. for 1 hr. The reaction solvent was concentrated, and the residue was diluted with ethyl acetate, washed with 1N hydrochloric acid and saturated aqueous sodium hydrogen carbonate solution, and the organic layer was dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography (ethyl acetate:hexane=1:25) to give heptyl 4-ethynylbenzoate (4a) (6.58 g, yield 82%) as an oily liquid.