1-Tetradecanol → Tetradecyl 2-(2,2-difluorocyclopropyl)acetate
反応式
[CH2:1]([OH:15])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH3:14].C(N(CC)CC)C.[F:23][C:24]1([F:31])[CH2:26][CH:25]1[CH2:27][C:28](Cl)=[O:29]>O1CCCC1.CN(C)C1C=CN=CC=1>[F:23][C:24]1([F:31])[CH2:26][CH:25]1[CH2:27][C:28]([O:15][CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH3:14])=[O:29]参加物
反応条件
- 温度
- 0 °C
実験手順
A solution of 2.08 g (9.7 mmol) 1-tetradecanol in 20 ml tetrahydrofuran (THF) was treated with 200 mg 4-dimethylaminopyridine (DMAP) and 1.35 ml (9.7 mmol) triethylamine and cooled to 0° C. A solution of 1.5 g (9.7 mmol) 2-(2,2-difluorocyclopropyl)acetyl chloride in 10 ml tetrahydrofuran at 0°-5° C. was added dropwise. The mixture was then stirred for 2 hours at room temperature. The precipitated triethylamine hydrochloride was separated, the solution concentrated under reduced pressure, and the residue dissolved in 50 ml diethyl ether. After washing with in turn 10 ml water, 10% caustic soda and water until neutral, the ether solution was dried over magnesium sulphate and evaporated in vacuo (200 mbar). The residue was distilled under an oil pump vacuum.
後処理
- customThe precipitated triethylamine hydrochloride was separated
- concentrationthe solution concentrated under reduced pressure
- dissolutionthe residue dissolved in 50 ml diethyl ether
- washAfter washing with in turn 10 ml water, 10% caustic soda and water until neutral, the ether solution
- dry with materialwas dried over magnesium sulphate
- customevaporated in vacuo (200 mbar)
- distillationThe residue was distilled under an oil pump vacuum
出典と根拠
- ORDレコード
- ord-0becca1fffc7429988d60b0a663e7a12
- 出典データセット
- uspto-grants-1992_02
- 特許番号
- US05089662
反応ノート
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