化工社化工社 化学情報印刷レポート · 研究参考用
Benzene → Acetic Anhydride
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Benzene | HCID 241 | — |
| 反応物 | Methanol | HCID 887 | — |
| 反応物 | Toluene | HCID 1140 | — |
| 反応物 | 3,5-Diacetyl-2,6-dihydroxy-4h-pyran-4-one | HCID 135465969 | — |
| 溶媒 | Sulfuric Acid | HCID 1118 | — |
| 生成物 | Acetic Anhydride | HCID 7918 | — |
| 生成物 | Acetonedicarboxylic acid | HCID 68328 | — |
| 生成物 | 3,5-Diacetyl-2,6-dihydroxy-4h-pyran-4-one | HCID 135465969 | — |
反応手順
The starting materials of formula II above used herein are generally prepared by reaction of 3,5-diacetyl-4,6-dihydroxy-2H-pyran-2-one with the appropriate amine (RNH2). The reactants are usually heated at reflux in an inert organic solvent such as benzene, toluene or methanol for from two to twelve hours. 3,5-Diacetyl-4,6-dihydroxy-2H-pyran-2-one is obtained by reaction of acetonedicarboxylic acid and acetic anhydride in sulfuric acid at elevated temperature.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04017633 |
| 出典データセット | uspto-grants-1977_04 |
| ORD ID | ord-a4080139efa24d0e88eb74d17b34b454 |
| 出典メモ | uspto-grants-1977_04 |