関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|
| 反応物 | Carbon Dioxide | HCID 280 | — |
| 反応物 | Phthalic Anhydride | HCID 6811 | — |
| 反応物 | 3-(Diethylamino)phenol | HCID 7062 | — |
| 反応物 | Sodium Hydroxide | HCID 14798 | — |
| 反応物 | [9-(2-Acetylphenyl)-6-(diethylamino)xanthen-3-ylidene]-diethylazanium | HCID 45271881 | — |
| 溶媒 | Water | HCID 962 | — |
| 生成物 | Solvent Red 49 | HCID 62357 | 90% |
反応手順
The Rhodamine dye of formula (II), Rhodamine B free base (Colour Index 45170:1), a well-known pigment, can be prepared by heating a stirred mixture of 10 parts by weight of m-diethylaminophenol and 12 parts by weight of phthalic anhydride to 175° C. under a blanket of carbon dioxide. The reaction mixture is stirred at 170°-175° C. for a period of 6-7 hours, then cooled to 40° C. and discharged into water. The pH of the resulting slurry is adjusted to 12 by adding caustic soda, and the insoluble material is recovered by filtration. The filter cake is then rinsed with water and dried to obtain Rhodamine B Base in a yield about 90% of theoretical.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| 特許番号 | US04426205 |
|---|
| 出典データセット | uspto-grants-1984_01 |
|---|
| ORD ID | ord-ed8de1c0e85242978067f03c34f2e41e |
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| 出典メモ | uspto-grants-1984_01 |
|---|
