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1-Bromopentane → 2,5-Bis(pentyloxy)terephthalic acid
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 1-Bromopentane | HCID 8057 | — |
| 反応物 | Potassium Carbonate | HCID 11430 | — |
| 反応物 | Diethyl 2,5-dihydroxyterephthalate | HCID 79980 | — |
| 触媒 | Potassium Iodide | HCID 4875 | — |
| 溶媒 | Cyclopentanone | HCID 8452 | — |
| 生成物 | 2,5-Bis(pentyloxy)terephthalic acid | HCID 18991370 | 140.2% |
反応手順
A mixture of 25.4 g of 2,5-dihydroxy terephthalic acid diethyl ester, 30.0 g potassium carbonate, 1 g potassium iodide and 31.5 g 1-bromopentane was heated to boiling-point in cyclopentanone for at least 24 hours. The solvent was withdrawn and 250 ml of 5 wt % caustic potash and 20 ml ethanol was added to the residue, which was then heated to boiling-point for at least 24 hours. After cooling to room temperature the product was precipitated by acidifying with hydrochloric acid and was recrystallized from methylene chloride. 23.7 g of 2,5-bis(pentyloxy) terephthalic acid was obtained.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US05488093 |
| 出典データセット | uspto-grants-1996_01 |
| ORD ID | ord-b4542d6c6cea403991b46ee36a21d6ce |
| 出典メモ | uspto-grants-1996_01 |