化工社化工社 化学情報印刷レポート · 研究参考用
Ethanol → Benzoic acid, 2-hydroxy-4-methyl-, ethyl ester
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Ethanol | HCID 702 | — |
| 反応物 | 2-Hydroxy-p-toluic acid | HCID 5788 | — |
| 反応物 | 1-Hydroxybenzotriazole hydrate | HCID 2796029 | — |
| 反応物 | Dimethylaminopropyl carbodiimide hydrochloride | HCID 21899179 | — |
| 溶媒 | Water | HCID 962 | — |
| 溶媒 | Dimethylformamide | HCID 6228 | — |
| 生成物 | Benzoic acid, 2-hydroxy-4-methyl-, ethyl ester | HCID 13013009 | 49% |
反応手順
4-Methylsalicylic acid (304 mg), 1-ethyl-3-(3-dimethylaminopropylcarbodiimide hydrochloride (420 mg), 1-hydroxybenzotriazole hydrate (337 mg), and ethanol (2 ml) were dissolved in N,N-dimethylformamide to prepare a solution which was then stirred at room temperature overnight. Water was added to the reaction solution, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was then washed with water and was dried over anhydrous sodium sulfate. The solvent was removed therefrom by distillation under the reduced pressure, and the residue was purified by column chromatography using acetone-hexane to give ethyl 4-methylsalicylate (175 mg, yield 49%).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US07560558B2 |
| 出典データセット | uspto-grants-2009_07 |
| ORD ID | ord-c7d9c838d6fc4357bcd4712c71a591d2 |
| 出典メモ | uspto-grants-2009_07 |