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4-Hydroxy-5-methoxy-1,3-benzenedicarboxaldehyde → 1,2-Dihydroxy-3,5-diformylbenzene
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 4-Hydroxy-5-methoxy-1,3-benzenedicarboxaldehyde | HCID 18035 | — |
| 反応物 | Phosphorus tribromide | HCID 24614 | — |
| 溶媒 | Dichloromethane | HCID 6344 | — |
| 生成物 | 1,2-Dihydroxy-3,5-diformylbenzene | HCID 19069872 | — |
反応手順
To a suspension containing 1.8 g of 4-hydroxy-5-methoxyisophtalaldehyde in 20 ml of dichloromethane was added 35 ml of 1 molar PBr3 in dichloromethane. The mixture was allowed to stand over night at room temperature and poured the to ice-water. Dichloromethane was evaporated in vacuo. After cooling the product was filtered and washed with water. Yield 0.94 g (57%), m.p. 192°-195° C.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04963590 |
| 出典データセット | uspto-grants-1990_10 |
| ORD ID | ord-0adebcea7bd546ad850129d98810c028 |
| 出典メモ | uspto-grants-1990_10 |