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Cyanoacetic acid hydrazide → 2-Formyl-3-methylquinoxaline-1,4-dioxide cyanoacetylhydrazone
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Cyanoacetic acid hydrazide | HCID 8820 | — |
| 反応物 | HCID 178429580 | HCID 178429580 | — |
| 溶媒 | Ethanol | HCID 702 | — |
| 生成物 | 2-Formyl-3-methylquinoxaline-1,4-dioxide cyanoacetylhydrazone | HCID 136335628 | — |
反応手順
A suspension comprising 20.4 grams (0.1 mole) of 2-formyl-3-methylquinoxaline-1,4-dioxide (m.p. of 180°-182° C.) and 9.9 grams (0.1 mole) of cyanoacetylhydrazine in 200 ml of ethanol was stirred for 4 hours at room temperature. The separated product was sucked off and washed with ethanol, so yielding 22.2 grams (78% of theoretical) of crude material. Upon crystallization from dimethylformamide, yellow crystals melting at a temperature within the range of 255°-260° C. were obtained.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04225604 |
| 出典データセット | uspto-grants-1980_09 |
| ORD ID | ord-ef9eb593a3cb44209c26cba25235065f |
| 出典メモ | uspto-grants-1980_09 |