[CH3:1][O:2][CH2:3][O:4][C:5]1[C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH:8]=[CH:7][CH:6]=1.C([Li])CCC.[C:20]1(=[O:26])[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]1.CCCCCC.C(OCC)(=O)C>CCOCC>[OH:26][C:20]1([C:6]2[CH:7]=[CH:8][C:9]3[C:14](=[CH:13][CH:12]=[CH:11][CH:10]=3)[C:5]=2[O:4][CH2:3][O:2][CH3:1])[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]1
A solution of 1-methoxymethoxy-naphthalene (3.76 g, 0.020 mole) in dry ether (40 mL) was treated with n-butyllithium (1.6M in hexane; 25.0 mL, 0.040 mole) at room temperature over a period of 15 minutes. After stirring for an additional 1.5 hours, a solution of cyclohexanone (4.90 g, 0.050 mole) in ether (15 mL) was added and the resulting mixture was stirred at room temperature for 2 hours. It was then quenched with saturated aqueous ammonium chloride and the crude product was isolated by extraction with ether. Chromatography with 9:1 hexane/ethyl acetate provided the title compound as a colorless oil (3.30 g, 58%).
Wird geladen…
