化工社化工社 化学情報印刷レポート · 研究参考用
3-Methyl-2-butenoic acid → 4,8-Dimethylnona-3,7-dien-2-one
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 3-Methyl-2-butenoic acid | HCID 10931 | — |
| 反応物 | 3-Methyl-2-buten-1-OL | HCID 11173 | — |
| 反応物 | 4-Methyl-2,4-pentadien-2-yl acetate | HCID 54555518 | — |
| 溶媒 | Acetic Acid | HCID 176 | — |
| 生成物 | 4,8-Dimethylnona-3,7-dien-2-one | HCID 549663 | 86% |
反応手順
110 parts of 4-methyl-2,4-pentadien-2-yl acetate and 60 parts of prenol are heated with 1.4 parts of 3,3-dimethylacrylic acid at about 180°C for 4 hours in a small pressure column at a pressure of 2 atmospheres, the acetic acid formed being distilled off continuously. Fractional distillation of the reaction product gives 61.8 parts of 4,8-dimethyl-3,7-nonadien-2-one (yield 86% of theory, conversion 62% based on prenol).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US03932462 |
| 出典データセット | uspto-grants-1976_01 |
| ORD ID | ord-272906040c7b45019dc23071b435746f |
| 出典メモ | uspto-grants-1976_01 |