反応式
[Si:1]([O:18][CH2:19][CH2:20][CH:21]1[CH2:24][C:23](=[O:25])[CH2:22]1)([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[BH4-].[Na+]>O1CCCC1>[Si:1]([O:18][CH2:19][CH2:20][CH:21]1[CH2:24][CH:23]([OH:25])[CH2:22]1)([C:14]([CH3:17])([CH3:15])[CH3:16])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1参加物
実験手順
3-(2-{[Tert-butyl(diphenyl)silyl]oxy}ethyl)cyclobutanone (5.11 g, 14.5 mmol) (WO 2006063281) was dissolved in tetrahydrofuran (120 mL). Sodium borohydride (548 mg, 14.5 mmol) was added and the reaction was stirred overnight at room temperature. The reaction was quenched with water and saturated aqueous sodium bicarbonate and stirred for 20 min until the bubbling ceased. The reaction mixture was diluted with ether and the aqueous layer was extracted with ether. The combined organic layers were washed with brine, dried over magnesium sulfate, filtered and evaporated in vacuo to give 3-(2-{[tert-butyl(diphenyl)silyl]oxy}ethyl)cyclobutanol (3.58 g, 69.6%) as a clear oil. Partial 1H NMR indicated a ˜3.5:1 mix of cis-trans isomers. (CDCl3, δ ppm, key peaks are 4.08 (quintet, J=7.42, 0.78H) and 4.34 (quintet, J=6.83, 0.22H).
後処理
- customThe reaction was quenched with water and saturated aqueous sodium bicarbonate
- stirringstirred for 20 min until the bubbling
- additionThe reaction mixture was diluted with ether
- extractionthe aqueous layer was extracted with ether
- washThe combined organic layers were washed with brine
- dry with materialdried over magnesium sulfate
- filtrationfiltered
- customevaporated in vacuo
出典と根拠
- ORDレコード
- ord-3712a0e5500b4daebeb52a1d06aef53d
- 出典データセット
- uspto-grants-2014_09
- 特許番号
- US08846933B2
関連ノート
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