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Acetic Anhydride → 4-Nitrophthalic acid anhydride
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Acetic Anhydride | HCID 7918 | — |
| 反応物 | 1,2-Benzenedicarboxylic acid, 4-nitro- | HCID 69121 | — |
| 溶媒 | Acetic Acid | HCID 176 | — |
| 生成物 | 4-Nitrophthalic acid anhydride | HCID 230976 | — |
反応手順
A mixture of 21.1 g of 4-nitrophthalic acid and 50.0 g of acetic anhydride were heated at reflux for 6 hours, following which the acetic acid was removed by distillation at atmospheric pressure. The excess acetic anhydride was removed by distillation at 15 mm Hg pressure with the flask temperature not exceeding 120° C, leaving a quantitative yield of crude 4-nitrophthalic anhydride, m.p. 114°-116° C. The product was recrystallized from chloroform to afford a 93% yield of product, m.p. 123°-124° C, identical to that of Example 1.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04064113 |
| 出典データセット | uspto-grants-1977_12 |
| ORD ID | ord-1d0a4b4cae294c89985cacd360cf72fc |
| 出典メモ | uspto-grants-1977_12 |