関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|
| 反応物 | Hydroquinone | HCID 785 | — |
| 反応物 | Potassium Carbonate | HCID 11430 | — |
| 反応物 | 2-Chloro-1-(isoxazolidin-2-yl)propan-1-one | HCID 13314616 | — |
| 溶媒 | Dimethylformamide | HCID 6228 | — |
| 生成物 | 2-(4-Hydroxyphenoxy)-1-(1,2-oxazolidin-2-yl)propan-1-one | HCID 13279434 | 90.8% |
反応手順
A mixture of N-[(±)-2-chloropropionyl]isoxazolidine (16.4 g) which was prepared as in Example 1, hydroquinone (13.2 g), anhydrous potassium carbonate (29.0 g) and dimethylformamide (100 ml) was stirred at 120° C. for 2 hours. After cooling, the reaction mixture was filtered through a suction filter to remove solid matters and the filtrate was concentrated in vacuo. The residue was washed with the addition of chloroform and 1 N hydrochloric acid and then with water and dried over anhydrous sodium sulfate. Removal of the solvent by a distillation in vacuo gave N-[(±)-2-(4-hydroxyphenoxy)propionyl]isoxazolidine (21.6 g) as a pale yellow oil which was purified by silica gel column chromatography to yield a colorless oil. nD20 =1.5412.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| 特許番号 | US04447259 |
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| 出典データセット | uspto-grants-1984_05 |
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| ORD ID | ord-b5e42e6d0d204c068b0b107f9d25fd97 |
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| 出典メモ | uspto-grants-1984_05 |
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