| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| 2,3,5,6-四氟-4-甲氧基吡啶 | 4-methoxy-2,3,5,6-tetrafluoropyridine | 2375-90-8 | C6H3F4NO | 181.09 |
The invention comprises 2,3,5,6-tetrafluoropyridine -4-carboxylic acid and the preparation thereof by oxidizing 2,3,5,6-tetrafluoro-4-propenylpyridine with nitric acid. The 4-carboxylic acid can be decarboxylated by heating to 2,3,5,6-tetrafluoropyridine. The s-benzylthiouronium derivative of the acid is obtained by reacting the acid with s-benzylthiouronium chloride.