2-Tetralone → 5,6-Dihydro-benzo[f]quinoline
Reaktionsgleichung
[CH2:1]([NH2:4])[C:2]#[CH:3].[CH2:5]1[C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH2:8][CH2:7][C:6]1=O>C(O)C>[CH:3]1[C:10]2[C:9]3[CH:8]=[CH:7][CH:6]=[CH:5][C:14]=3[CH2:13][CH2:12][C:11]=2[N:4]=[CH:1][CH:2]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
Propargylamine (5 mL) is added to a flask charged with a stir bar, 2-tetralone (10.00 g), NaAuCl4*2H2O (0.65 g), and ethanol (50 mL) (caution: a very exothermic reaction may evolve afterwards→keep an ice bath at hand). The resulting mixture is stirred at room temperature for 15 min and then at reflux temperature for 1 h. After cooling the mixture to room temperature, the solvent is evaporated and the residue is chromatographed on silica gel (cyclohexane/ethyl acetate 60:40) to afford the title compound as an oil. Yield: 6.78 g (56% of theory); LC (method 1): tR=1.81 min; Mass spectrum (ESI+): m/z=182 [m+H]+. Alternatively, the reaction may be conducted in a microwave oven heating with microwave irradiation to 100° C. for 10 min.