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【结 构 式】 
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【分子编号】59944 【品名】5-(2-thienyl)isoxazole 【CA登记号】 |
【 分 子 式 】C7H5NOS 【 分 子 量 】151.18884 【元素组成】C 55.61% H 3.33% N 9.26% O 10.58% S 21.21% |
与该中间体有关的原料药合成路线共 1 条
合成路线1
该中间体在本合成路线中的序号：(III)Condensation of 2-acetylthiophene (I) with dimethylformamide dimethylacetal produced enaminone (II), which was subsequently cyclized to the isoxazole (III) upon treatment with hydroxylamine. Further condensation of (III) with dimethylformamide dimethylacetal, with concomitant isoxazole ring opening, gave rise to the enamino nitrile (IV). This was then cyclized with aminoguanidine nitrate (V) under basic conditions to furnish the intermediate aminopyrazole (VI).
| 【2】 Tomcufcik, A.S.; Dusza, J.P.; Albright, J.D.; Beer, B. (Wyeth); N-Methyl-N-(-[3-[-2-thienylcarbonyl]-pyrazol-[1,5-alpha]-pyrimidin-7-yl]phenyl)acetamide and compsns. and methods related thereto. US 6399621 . |
| 【1】 Sorbera, L.A.; Castaner, J.; Martin, L.; Indiplon. Drugs Fut 2003, 28, 8, 739. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (I) | 24490 | 1-(2-Thienyl)-1-ethanone; 2-Acetylthiophene | 88-15-3 | C6H6OS | 详情 | 详情 |
| (II) | 59943 | (E)-3-(dimethylamino)-1-(2-thienyl)-2-propen-1-one | C9H11NOS | 详情 | 详情 | |
| (III) | 59944 | 5-(2-thienyl)isoxazole | C7H5NOS | 详情 | 详情 | |
| (IV) | 59945 | (E)-3-(dimethylamino)-2-(2-thienylcarbonyl)-2-propenenitrile | C10H10N2OS | 详情 | 详情 | |
| (V) | 10015 | 1-Hydrazinecarboximidamide; Hydrazinecarboximidamide | 79-17-4 | CH6N4 | 详情 | 详情 |
| (VI) | 59946 | (3-amino-1H-pyrazol-4-yl)(2-thienyl)methanone | C8H7N3OS | 详情 | 详情 |
Extended Information