1,2,6-Hexanetriol → 2,2-Dilinoleyl-4-(4-hydroxybutyl)-[1,3]-dioxolane
反応式
[CH2:1]([C:19]([CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28]/[CH:29]=[CH:30]\[CH2:31]/[CH:32]=[CH:33]\[CH2:34][CH2:35][CH2:36][CH2:37][CH3:38])=[O:20])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]/[CH:9]=[CH:10]\[CH2:11]/[CH:12]=[CH:13]\[CH2:14][CH2:15][CH2:16][CH2:17][CH3:18].[CH2:39](O)[CH:40]([OH:46])[CH2:41][CH2:42][CH2:43][CH2:44][OH:45].C1(C)C=CC(S([O-])(=O)=O)=CC=1.[NH+]1C=CC=CC=1>C1(C)C=CC=CC=1>[CH2:1]([C:19]1([CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28]/[CH:29]=[CH:30]\[CH2:31]/[CH:32]=[CH:33]\[CH2:34][CH2:35][CH2:36][CH2:37][CH3:38])[O:46][CH:40]([CH2:41][CH2:42][CH2:43][CH2:44][OH:45])[CH2:39][O:20]1)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]/[CH:9]=[CH:10]\[CH2:11]/[CH:12]=[CH:13]\[CH2:14][CH2:15][CH2:16][CH2:17][CH3:18]参加物
5
実験手順
A mixture of dilinoleyl ketone (I, previously prepared as described in Example 1, 1.05 g, 2.0 mmol), 1,2,6-hexanetriol (0.54 g, 4 mmol) and pyridinium p-toluenesulfonate (100 mg, 0.4 mmol) in 150 mL of toluene was refluxed under nitrogen overnight with a Dean-Stark tube to remove water. The resulting mixture was cooled to room temperature. The organic phase was washed with water (2×60 mL), brine (60 mL), and dried over anhydrous Na2SO4. Evaporation of the solvent resulted in a yellowish oily residual (1.5 g). The crude product was purified by column chromatography on silica gel (230-400 mesh, 100 mL) with 0-0.5% methanol in dichloromethane as eluent. This afforded 1.4 g of pure II as colourless oil.