Potassium Carbonate → HCID 57965768、化合物

反応式

Br[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.C(=O)([O-])[O-].[K+].[K+].[CH2:19]([O:21][C:22](=[O:50])[CH2:23][C:24]1([CH2:27][CH2:28][CH:29](/[CH:41]=[CH:42]/[C:43]2[CH:48]=[CH:47][CH:46]=[CH:45][C:44]=2[OH:49])[CH2:30][C:31]2[CH:40]=[CH:39][C:34]([C:35]([O:37][CH3:38])=[O:36])=[CH:33][CH:32]=2)[CH2:26][CH2:25]1)[CH3:20]>C(#N)C>[CH2:19]([O:21][C:22](=[O:50])[CH2:23][C:24]1([CH2:27][CH2:28][CH:29](/[CH:41]=[CH:42]/[C:43]2[CH:48]=[CH:47][CH:46]=[CH:45][C:44]=2[O:49][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)[CH2:30][C:31]2[CH:32]=[CH:33][C:34]([C:35]([O:37][CH3:38])=[O:36])=[CH:39][CH:40]=2)[CH2:25][CH2:26]1)[CH3:20]

参加物

実験手順

273 mg (1.2 mmol) of (5-bromopentyl)benzene and 222 mg (1.6 mmol) of anhydrous potassium carbonate are added to a solution of 350 mg (0.8 mmol) of methyl 4-[(3E)-2-{2-[1-(2-ethoxy-2-oxoethyl)cyclopropyl]ethyl}-4-(2-hydroxyphenyl)but-3-en-1-yl]benzoate in 10 ml of dry acetonitrile, and the mixture is heated under reflux for 12 hours. The mixture is then concentrated to dryness. The residue is taken up in ethyl acetate, washed with water and saturated sodium chloride solution and dried over sodium sulfate. The organic phase is concentrated. The crude product obtained is purified by flash chromatography on silica gel (mobile phase: cyclohexane/ethyl acetate 9:1). This gives 275 mg (58% of theory) of a solid.