m-Chloroperbenzoic acid → Dibenzyl 2-[(benzylsulfinyl)methyl]pentanedioate
反応式
[CH2:1]([S:8]([CH2:11][CH:12]([CH2:23][CH2:24][C:25]([O:27][CH2:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[O:26])[C:13]([O:15][CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)=[O:14])(=O)=[O:9])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.ClC1C=CC=C(C(OO)=O)C=1>ClCCl>[CH2:1]([S:8]([CH2:11][CH:12]([CH2:23][CH2:24][C:25]([O:27][CH2:28][C:29]1[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=1)=[O:26])[C:13]([O:15][CH2:16][C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1)=[O:14])=[O:9])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1参加物
4
実験手順
To a cooled solution (−78° C.) of dibenzyl 2-[(benzylsulfonyl)methyl]pentanedioate (8.2 g, 18.3 mmol) in dichloromethane (100 mL), was added 3-chloroperbenzoic acid (85%, 8.2 g, 40.3 mmol) with stirring. The reaction mixture was allowed to warm to room temperature. White solids precipitated from the reaction mixture. After 2 hours at room temperature, the reaction mixture was filtered and the white solids washed with dichloromethane. The filtrate was washed twice with a saturated aqueous solution of sodium bicarbonate and the dichloromethane removed under reduced pressure. The resulting oil was purified by column chromatography to yield 7.5 g (85%) of clear oil.