関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|
| 反応物 | Methanol | HCID 887 | — |
| 反応物 | p-Toluenesulfonic acid | HCID 6101 | — |
| 反応物 | Trimethyl orthoformate | HCID 9005 | — |
| 反応物 | 2,5-Dihydro-2,5-dimethoxyfuran | HCID 78974 | — |
| 生成物 | 1,1,2,4,4-Pentamethoxybutane | HCID 18755677 | — |
反応手順
0.2 g of p-toluenesulfonic acid was added to a solution of 265.3 g (2 mol) of 2,5-dimethoxy-2,5-dihydrofuran (IIa), 384 g (12 mol) of methanol (IIIa) and 214.4 g (2 mol) of trimethyl orthoformate (IVa) in a 2 1 glass reactor, and the mixture was then heated to 65° C. over the course of 20 minutes (min) and finally refluxed for 2 hours (h). The reaction was followed by gas chromatography (percentage areas). The following table shows the course of the reaction to form E,Z-butenedial bis(dimethyl acetal) (Ia) and 1,1,2,4,4-pentamethoxybutane (Va).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| 特許番号 | US05338888 |
|---|
| 出典データセット | uspto-grants-1994_08 |
|---|
| ORD ID | ord-a9b7a4a6a48441558f199af70de591e8 |
|---|
| 出典メモ | uspto-grants-1994_08 |
|---|
