関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|
| 反応物 | Sodium Hydroxide | HCID 14798 | — |
| 反応物 | Sodium Dithionite | HCID 24489 | — |
| 反応物 | 4,5-Diamino-9,10-dihydro-1,8-dihydroxy-9,10-dioxoanthracene-2,6-disulphonic acid | HCID 80744 | — |
| 生成物 | 9,10-Anthracenedione, 2,3-dihydro-1,4,5,8-tetrahydroxy- | HCID 66485 | — |
反応手順
The 1,8-dihydroxy-4,5-diaminoanthraquinone-2,7-disulfonic acid reaction mixture prepared as in Example 5c, was cooled to 70°C. It was then treated with 117 parts of 50% sodium hydroxide solution and 70 parts of sodium hydrosulfite. The mixture was heated to 78° to 100°C and held at that temperature for 1 hour. It was then cooled to 60°C and filtered. The product was washed with dilute sodium sulfate solution containing about 1% of sodium hydrosulfite and the washed cake was immediately slurried in 10 to 15% sulfuric acid. The filtration of the product and drying yielded 20 parts of leuco 1,4,5,8-tetrahydroxyanthraquinone.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| 特許番号 | US03983145 |
|---|
| 出典データセット | uspto-grants-1976_09 |
|---|
| ORD ID | ord-134bc9b8315a4cd394c0caadfb0384ed |
|---|
| 出典メモ | uspto-grants-1976_09 |
|---|
