反応式
[Br-].[C:2]([CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)([OH:4])=[O:3].[OH:29][CH:30]([CH3:40])[CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][C:37](=O)[CH3:38]>O1CCCC1>[OH:29][CH:30]([CH3:40])[CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][C:37]([CH3:38])=[CH:9][CH2:8][CH2:7][CH2:6][CH2:5][C:2]([OH:4])=[O:3]参加物
4
実験手順
325 g (0.7 mol) of (5-carboxypentyl)triphenylphosphonium bromide were dissolved in 1500 ml of tetrahydrofuran. After the addition of 180 g (1.6 mol) of potassium t-butylate in 700 ml of tetrahydrofuran the mixture was treated with 175 g (0.71 mol) of 9-hydroxy-2-decanone (70% purity). After usual work up 186 g of crude 14-hydroxy-7-methyl-pentadec-6-enoic acid were obtained. This product was dissolved in 400 ml of methanol and, after the addition of 5 ml of concentrated sulphuric acid, heated to reflux for 2 hours. After work up, bulb-tube distillation and chromatography 102 g (50%) of methyl 14-hydroxy-7-methyl- pentadec-6-enoate were obtained having the following characteristics:
出典と根拠
- ORDレコード
- ord-bc42591867964792bde017d4e9f14f30
- 出典データセット
- uspto-grants-2001_07
- 特許番号
- US06255276B1
関連ノート
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