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3,4,5-Trimethoxybenzaldehyde → Tetrahydro-3,5-bis[(3,4,5-trimethoxyphenyl)methylene]-4H-pyran-4-one
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 3,4,5-Trimethoxybenzaldehyde | HCID 6858 | — |
| 反応物 | Tetrahydro-4H-pyran-4-one | HCID 121599 | — |
| 溶媒 | Hydrochloric Acid | HCID 313 | — |
| 溶媒 | Ethanol | HCID 702 | — |
| 生成物 | Tetrahydro-3,5-bis[(3,4,5-trimethoxyphenyl)methylene]-4H-pyran-4-one | HCID 2740872 | — |
反応手順
A solution of 6.0 g (0.06 mole) of tetrahydro-4H-pyran-4-one and 25 g (0.127 mole) of 3,4,5-trimethoxybenzaldehyde in 75 ml of EtOH and 10 ml of concentrated HCl is stirred and heated at reflux for 3 hours. The product gradually precipitates from the cooled solution. The yield of yellow crystals is 12.0 g (44%), m.p. 187°-189°.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04128648 |
| 出典データセット | uspto-grants-1978_12 |
| ORD ID | ord-48d5a20802204161ac721fb022201aab |
| 出典メモ | uspto-grants-1978_12 |