Huagongshe화공사 화학 정보 인쇄 보고서 · 연구 참고용
1-Bromopentane → 2,5-Bis(pentyloxy)terephthalic acid
참여 물질
| 역할 | 이름 | HCID | 투입량 |
|---|---|---|---|
| 반응물 | 1-Bromopentane | HCID 8057 | — |
| 반응물 | Potassium Carbonate | HCID 11430 | — |
| 반응물 | Diethyl 2,5-dihydroxyterephthalate | HCID 79980 | — |
| 촉매 | Potassium Iodide | HCID 4875 | — |
| 용매 | Cyclopentanone | HCID 8452 | — |
| 생성물 | 2,5-Bis(pentyloxy)terephthalic acid | HCID 18991370 | 140.2% |
반응 단계
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 The solvent was withdrawn and 250 ml of 5 wt % caustic potash and 20 ml ethanol was added to the residue, which was then heated to boiling-point for at least 24 hours.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.
출처 및 근거
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 특허 번호 | US05488093 |
| 출처 데이터셋 | uspto-grants-1996_01 |
| ORD ID | ord-b4542d6c6cea403991b46ee36a21d6ce |
| 출처 메모 | uspto-grants-1996_01 |