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Hydroquinone → Butyl 6-ethoxy-3-methyl-3,6-dihydro-2H-pyran-2-carboxylate
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Hydroquinone | HCID 785 | — |
| 反応物 | Butyl oxoacetate | HCID 80521 | — |
| 反応物 | 1-Ethoxy-1,3-pentadiene | HCID 53769642 | — |
| 溶媒 | Dichloromethane | HCID 6344 | — |
| 生成物 | Butyl 6-ethoxy-3-methyl-3,6-dihydro-2H-pyran-2-carboxylate | HCID 23338794 | — |
反応手順
Following the procedure of Example 12, a solution of 26.7 g. (0.226 mol) of 1-ethoxy-1,3-pentadiene (purity, 95%), 32.5 g. (0.25 mol) of butyl glyoxylate and 0.250 g. of hydroquinone in 250 ml. of methylene chloride was refluxed for 48 hours to give 28.0 g. of a mixture of 1-ethoxy-1,3-pentadiene and butyl glyoxylate and 20.32 g. of distilled 2H-pyran butyl ester (b1.0 = 100°-110° ) as an oil. Yield based on 1-ethoxy-1,3-pentadiene, 34%.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US03997529 |
| 出典データセット | uspto-grants-1976_12 |
| ORD ID | ord-fe0d84f6e20d4d2aaf47db79d103cbfc |
| 出典メモ | uspto-grants-1976_12 |