化工社化工社 化学情報印刷レポート · 研究参考用
2-Methylbenzenesulfonic acid → 4,5-Dichlorophthalic anhydride
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 2-Methylbenzenesulfonic acid | HCID 6925 | — |
| 反応物 | 4,5-Dichlorophthalic acid | HCID 92600 | — |
| 溶媒 | O-Xylene | HCID 7237 | — |
| 生成物 | 4,5-Dichlorophthalic anhydride | HCID 70334 | 89.9% |
反応手順
In a flask equipped with a stirrer, nitrogen inlet, and DEAN-STARK trap, 10.0 grams of 4,5-dichlorophthalic acid, 150 milliliters of xylene, and several crystals of toluenesulfonic acid were added. The mixture was heated to reflux and water was collected in the DEAN-STARK trap over a period often hours. The xylene was distilled off and the solid was collected in a BÜCHNER funnel and allowed to air dry, yielding 8.3 grams of 4,5-dichlorophthalic anhydride.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US06652970B1 |
| 出典データセット | uspto-grants-2003_11 |
| ORD ID | ord-d9b97a3b89b14b2e8638bf557f027858 |
| 出典メモ | uspto-grants-2003_11 |