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Dimethylformamide → 7-(alpha,alpha,alpha-Trifluoro-m-tolyl)pyrazolo[1,5-a]pyrimidine-3-carboxaldehyde
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Dimethylformamide | HCID 6228 | — |
| 反応物 | Phosphorus oxychloride | HCID 24813 | — |
| 反応物 | 7-[3-(Trifluoromethyl)phenyl]pyrazolo[1,5-a]pyrimidine | HCID 19756203 | — |
| 生成物 | 7-(alpha,alpha,alpha-Trifluoro-m-tolyl)pyrazolo[1,5-a]pyrimidine-3-carboxaldehyde | HCID 23329840 | — |
反応手順
Five milliliters of phosphorus oxychloride is added dropwise to an ice cooled solution of 25 ml. of dimethylformamide and when this is complete 5.26 g. of 7-(α,α,α-trifluoro-m-tolyl)pyrazolo[1,5-a]pyrimidine is added and the reaction mixture is heated on a steam bath for one hour. This is poured onto ice and made strongly basic to yield the desired compound, recovered by subsequent filtration, m.p. 168°-170° C.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US04236005 |
| 出典データセット | uspto-grants-1980_11 |
| ORD ID | ord-ec0e87970c7e43239f88ecd4f162462a |
| 出典メモ | uspto-grants-1980_11 |