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Methanol → 4,6-Diaminonicotinonitrile
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Methanol | HCID 887 | — |
| 反応物 | 4,6-Diamino-2-bromo-3-pyridinecarbonitrile | HCID 170668 | — |
| 反応物 | Potassium Acetate | HCID 517044 | — |
| 反応物 | HCID 178418361 | HCID 178418361 | — |
| 触媒 | Palladium | HCID 23938 | — |
| 溶媒 | Tetrahydrofuran | HCID 8028 | — |
| 生成物 | 4,6-Diaminonicotinonitrile | HCID 295896 | — |
反応手順
A suspension of 21.3 g of 6-bromo-2,4-diamino-5-cyanopyridine (JACS, 80:2838-2840 (1958)) and 1 g of 20% palladium on charcoal in 250 mL of tetrahydrofuran was shaken in a Parr apparatus under an atmosphere hydrogen. After 2 hours, the reaction was stopped and 10 g of potassium acetate and 50 mL of methanol added. The reaction was recharged with hydrogen and shaken for 18 hours. The solvents were removed under reduced pressure and the residue crystallized from isopropyl alcohol to afford the title compound 2,4-diamino-5-cyanopyridine, mp 201°-202° C.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US05733913 |
| 出典データセット | uspto-grants-1998_03 |
| ORD ID | ord-07e13572c7374292938c79bf24b4e98d |
| 出典メモ | uspto-grants-1998_03 |