| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| 3-(3,4-二甲氧基苯基)-1H-吡唑-5-羧酸 | 3-(3,4-dimethoxyphenyl)-1H-pyrazole-5-carboxylic acid | 909857-88-1 | C12H12N2O4 | 248.238 |
| —— | 3-(3,4-dimethoxyphenyl)-1H-pyrazole-5-carbaldehyde | —— | C12H12N2O3 | 232.239 |
| —— | (3-(3,4-dimethoxyphenyl)-1H-pyrazol-5-yl)methanol | —— | C12H14N2O3 | 234.255 |
| —— | (E)-1-(3,4-dimethoxyphenyl)-3-(3-(3,4-dimethoxyphenyl)-1H-pyrazol-5-yl)prop-2-en-1-one | —— | C22H22N2O5 | 394.427 |
Pyrazole-fused cyclic anhydrides have been employed for the first time as the Castagnoli–Cushman reaction partners to produce hitherto unknown 4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-7-carboxylates in remarkably convenient and speedy fashion. Attempts to realize the same chemistry with indole and benzimidazole analogues failed.