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Dichloromethane → Dimethyl terephthalate
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Dichloromethane | HCID 6344 | — |
| 反応物 | Phosgene | HCID 6371 | — |
| 反応物 | Terephthalic Acid | HCID 7489 | — |
| 溶媒 | Triethylamine | HCID 8471 | — |
| 生成物 | Dimethyl terephthalate | HCID 8441 | — |
反応手順
Following the general procedure in Example 1 for the preparation of the diacid chloride, 10.13 parts of terephthalic acid were added to a mixture of 14.7 parts triethylamine and 14.4 parts phosgene in 200 parts dry dichloromethane at 25° to 30° C. The ratio of equivalents of triethylamine base/COOH acid group was 1.19. After carrying out the reaction and esterifying the resulting diacid chloride by the procedure described in Example 1, no dimethyl terephthalate was isolated. Instead, 100% recovery of unreacted terephthalic acid was obtained.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04129594 |
| 出典データセット | uspto-grants-1978_12 |
| ORD ID | ord-fa4a90817f7b49778a1019beb22e2e2f |
| 出典メモ | uspto-grants-1978_12 |