化工社化工社 化学情報印刷レポート · 研究参考用
1,3-Dimethyl-2-imidazolidinone → 5-Methoxy-3-phenyl-1-tetralone
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 1,3-Dimethyl-2-imidazolidinone | HCID 6661 | — |
| 反応物 | 2-Propenoic acid, 3-phenyl-, methyl ester | HCID 7644 | — |
| 反応物 | 1,3-Propanedithiol | HCID 8013 | — |
| 反応物 | 2-Methoxybenzaldehyde | HCID 8658 | — |
| 反応物 | 1,2-Dithiane | HCID 136335 | — |
| 反応物 | Butyllithium | HCID 178418339 | — |
| 溶媒 | Dichloromethane | HCID 6344 | — |
| 生成物 | 5-Methoxy-3-phenyl-1-tetralone | HCID 12212406 | — |
反応手順
o- Anisaldehyde (20.5 g) was treated with 1,3-propanedithiol (24 ml) in the presence of BF. etherate (4 ml) and CH2Cl2 (300 ml). This dithiane derivative (4.7 g) was reacted with n-BuLi (2.5 M hexane solution) (7.3 ml), methyl cinnamate (3.4 g) and 1,3-dimethyl-2-imidazolidone (4.6 ml) affording the desired product (M+H)+ 389. Desulfurization was accomplished with Raney Nickel and EtOH, followed by hydrolysis to the desired carboxylic acid. Cyclization to the desired 5-methoxy-3-phenyl-1-tetralone was accomplished by heating with polyphosphoric acid, (M+H)+ 253.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US05140040 |
| 出典データセット | uspto-grants-1992_08 |
| ORD ID | ord-8836dce887c547c29440b5ab9103838c |
| 出典メモ | uspto-grants-1992_08 |