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Isocyanic acid → 2,5-Dimethyl-3,6-dipropylpyrazine
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Isocyanic acid | HCID 6347 | — |
| 反応物 | 2-Hexanone | HCID 11583 | — |
| 反応物 | Nitrosyl chloride | HCID 17601 | — |
| 反応物 | 3-Oximino-2-hexanone | HCID 71437750 | — |
| 触媒 | Zinc | HCID 23994 | — |
| 溶媒 | Acetic Acid | HCID 176 | — |
| 生成物 | 2,5-Dimethyl-3,6-dipropylpyrazine | HCID 596333 | — |
反応手順
c. 2,5-Dimethyl-3,6-dipropyl-pyrazine was prepared by first forming 3-oximino-2-hexanone by reacting 2-hexanone with nitrosyl chloride according to the method of BOUVEAULT, Bull. [3] 31, 1163 (1904). The autocondensation of two molecules of the imino-ketone in the presence of zinc and acetic acid [according to the method described in Chimia 11, 310 (1957)] yielded 2,5-dimethyl-3,6-dipropyl-pyrazine which had a b.p. of 109°-110°C./10 mm. Hg.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US03952026 |
| 出典データセット | uspto-grants-1976_04 |
| ORD ID | ord-3ac6a8a1ebfd42e995c4edb1db1327a9 |
| 出典メモ | uspto-grants-1976_04 |