化工社化工社 化学情報印刷レポート · 研究参考用
Water → 7-Hydroxy-4-(naphthalen-2-yl)-2H-1-benzopyran-2-one
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Water | HCID 962 | — |
| 反応物 | Resorcinol | HCID 5054 | — |
| 反応物 | 3-Naphthalen-2-yl-3-oxopropionic acid ethyl ester | HCID 2760158 | — |
| 溶媒 | Sulfuric Acid | HCID 1118 | — |
| 生成物 | 7-Hydroxy-4-(naphthalen-2-yl)-2H-1-benzopyran-2-one | HCID 20570495 | 26% |
反応手順
A mixture of resorcinol (11.0 g, 0.1 mole) and ethyl 2-naphthoylacetate (24.2 g, 0.1 mole) in concentrated sulphuric acid (50 ml) was stirred at room temperature for 5 days then poured into water to give a yellow gum. The gum was washed several times with water then dissolved in ethanol and diluted with water to give 7-hydroxy-4-(2-naphthyl)coumarin as a fine pale brown precipitate in 26% yield.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04148909 |
| 出典データセット | uspto-grants-1979_04 |
| ORD ID | ord-14c46dd2b2854c7fb3e2d427d50d2b97 |
| 出典メモ | uspto-grants-1979_04 |