| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| 乙基5-氧代-2,5-二氢-1,2-恶唑-4-羧酸酯 | ethyl 5-oxo-2,5-dihydroisoxazole-4-carboxylate | 54535-14-7 | C6H7NO4 | 157.126 |
While isoxazol-5(2H)-ones substituted with heterocycles at C2 but unsubstituted at C3 react with amines to give either amidines or malonamides, their reaction at low temperatures with lithium dialkylamides is a preparatively useful procedure for obtaining the amidines in most cases. Longer reaction times may lead to formation of pyrimidin-4-ones when ester groups are present at C4 of the isoxazolone.