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Acetic Acid → 4-methyl-2,7-diphenyl-1H-pyrazolo[3,4-b]pyridine-3,6-dione
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Acetic Acid | HCID 176 | — |
| 反応物 | Ethyl Acetoacetate | HCID 8868 | — |
| 反応物 | HCID 178516394 | HCID 178516394 | — |
| 溶媒 | Water | HCID 962 | — |
| 生成物 | 4-methyl-2,7-diphenyl-1H-pyrazolo[3,4-b]pyridine-3,6-dione | HCID 360316 | 34.5% |
反応手順
A mixture of 25 g of 1-phenyl-3-anilino-2-pyrazolin-5-one, 18 g of ethyl acetoacetate, and 150 ml of acetic acid was heat-refluxed for 6 hours. The reaction mixture was diluted with water, and the formed solid was crystallized from acetonitrile to obtain 10.9 g of 2,7-diphenyl-4-methylpyrazolo[3,4-b]pyridine-3,6-dione having a melting point of 145° to 147° C.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US05063146 |
| 出典データセット | uspto-grants-1991_11 |
| ORD ID | ord-4d3dc8d772864b85895b69c896b30bf7 |
| 出典メモ | uspto-grants-1991_11 |