関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|
| 反応物 | Hydrochloric Acid | HCID 313 | — |
| 反応物 | Acetylacetone | HCID 31261 | — |
| 反応物 | HCID 178418324 | HCID 178418324 | — |
| 溶媒 | Water | HCID 962 | — |
| 生成物 | (4,6-Dimethylpyrimidin-2-yl)cyanamide | HCID 521618 | 70% |
反応手順
A mixture of 42 g (0.5 mole) of cyanoguanidine ("dicyandiamide") and 50 g (0.5 mole) of 2,4-pentanedione ("acetylacetone") is heated at 120° C. for 15 hours. After the reaction mixture has cooled, 500 ml of water are added and the solution is acidified with hydrochloric acid at 0° C. to 10° C. The product thereby obtained as crystals is isolated by filtration with suction. 51.8 g (70% of theory) of 2-cyanoamino-4,6-dimethyl-pyrimidine of melting point 205° C. are obtained.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| 特許番号 | US04658027 |
|---|
| 出典データセット | uspto-grants-1987_04 |
|---|
| ORD ID | ord-78799e24c7f544e895ba19dcf4aa29bb |
|---|
| 出典メモ | uspto-grants-1987_04 |
|---|
