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Diethyl Malonate → 3,4,7,8-Tetrahydro-2-oxo-4-phenyl-8-(phenylmethylene)-2H,5H-thiopyrano[4,3-b]pyran-3-carboxylic acid, ethyl ester
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Diethyl Malonate | HCID 7761 | — |
| 反応物 | tetrahydro-3,5-bis(phenylmethylene)-4H-thiopyran-4-one | HCID 336779 | — |
| 反応物 | Sodium ethoxide | HCID 2723922 | — |
| 反応物 | Sodium | HCID 5360545 | — |
| 溶媒 | Ethanol | HCID 702 | — |
| 生成物 | 3,4,7,8-Tetrahydro-2-oxo-4-phenyl-8-(phenylmethylene)-2H,5H-thiopyrano[4,3-b]pyran-3-carboxylic acid, ethyl ester | HCID 86736179 | — |
反応手順
To an ethanolic solution of sodium ethoxide [prepared from 555 mg (24 mg atom) of sodium in 50 ml of ethanol] is added diethyl malonate (3.52 g, 22 mmole) in 50 ml of absolute ethanol. After heating at reflux temperature for 2 hours, tetrahydro-3,5-bis(phenylmethylene)-4H-thiopyran-4-one (5.84 g, 20 mmole) is added. The resulting solution is then heated at reflux temperature for 2 hours.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04127667 |
| 出典データセット | uspto-grants-1978_11 |
| ORD ID | ord-fcd74bea8cfa43aaae7cf79e512f6312 |
| 出典メモ | uspto-grants-1978_11 |