反応式
[K].CCSC(N(CC(C)C)CC(C)C)=O.[O:16]1[C:20]2([CH2:25][CH2:24][CH:23]([CH:26]3[CH2:31][CH2:30][CH:29]([C:32]4[CH:37]=[CH:36][CH:35]=[C:34]([F:38])[CH:33]=4)[CH2:28][CH2:27]3)[CH2:22][CH2:21]2)[O:19][CH2:18][CH2:17]1.[Cl-].[Na+]>CS(C)=O>[O:16]1[C:20]2([CH2:25][CH2:24][CH:23]([C@H:26]3[CH2:31][CH2:30][C@H:29]([C:32]4[CH:37]=[CH:36][CH:35]=[C:34]([F:38])[CH:33]=4)[CH2:28][CH2:27]3)[CH2:22][CH2:21]2)[O:19][CH2:18][CH2:17]1参加物
6
反応条件
- 温度
- 100 °C
実験手順
23.7 g of potassium t.-butylate were added to a solution of 125.3 g of 4-(1,4-dioxaspiro[4,5]dec-8-yl)-1-(3-fluorophenyl)-cyclohexane (cis/trans 50/47) in 630 ml of dimethyl sulphoxide, the mixture was stirred at 100° C. for 2 hrs., cooled and poured into 2500 ml of 5 percent sodium chloride solution. The reaction mixture was extracted with methylene chloride, the organic phase was dried over sodium sulfate, filtered and the filtrate was evaporated. Crystallization of the residue from isopropanol gave 121.9 g of trans-4-(1,4-dioxaspiro[4,5]dec-8-yl)-1-(3-fluorophenyl)cyclohexane as colorless crystals (trans content 99.8%).
後処理
- temperature, cooled
- extractionThe reaction mixture was extracted with methylene chloride
- dry with materialthe organic phase was dried over sodium sulfate
- filtrationfiltered
- customthe filtrate was evaporated
- customCrystallization of the residue from isopropanol
出典と根拠
- ORDレコード
- ord-5ec8769642e9475c888caa24dee08499
- 出典データセット
- uspto-grants-1999_03
- 特許番号
- US05888423
関連ノート
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