Potassium Carbonate → HCID 57831336、化合物

反応式

[C:1]([C:3]1[CH:8]=[CH:7][C:6]([CH2:9][CH2:10][CH:11](/[CH:21]=[CH:22]/[C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][C:24]=2[OH:29])[CH2:12][CH2:13][CH2:14][CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17])=[CH:5][CH:4]=1)#[N:2].[C:30]([C:34]1[CH:41]=[CH:40][C:37]([CH2:38]Br)=[CH:36][CH:35]=1)([CH3:33])([CH3:32])[CH3:31].C(=O)([O-])[O-].[K+].[K+]>C(#N)C>[C:30]([C:34]1[CH:35]=[CH:36][C:37]([CH2:38][O:29][C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][C:23]=2/[CH:22]=[CH:21]/[CH:11]([CH2:10][CH2:9][C:6]2[CH:7]=[CH:8][C:3]([C:1]#[N:2])=[CH:4][CH:5]=2)[CH2:12][CH2:13][CH2:14][CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17])=[CH:40][CH:41]=1)([CH3:33])([CH3:31])[CH3:32]

参加物

実験手順

A solution of 2300 mg (5.87 mmol) of ethyl E-6-[2-(4-cyanophenyl)ethyl]-8-(2-hydroxyphenyl)oct-7-enoate in 160 ml of dry acetonitrile is mixed with 1600 mg (7.05 mmol) of 4-(tert-butyl)benzyl bromide and 1220 mg (8.81 mmol) of anhydrous potassium carbonate and 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, dried over sodium sulfate and the organic phase concentrated. The resulting crude product is purified by flash chromatography an silica gel (mobile phase: cyclohexane/ethyl acetate 10:1). 2800 mg (5.21 mmol, 88% of theory) of a solid are obtained.