反应方程式
[Cl:1][C:2]1[CH:3]=[N:4][CH:5]=[C:6]([Cl:22])[C:7]=1[S:8][C:9]1[S:13][C:12]([C:14]([O:16]CC)=[O:15])=[CH:11][C:10]=1[N+:19]([O-:21])=[O:20].S(=O)(=O)(O)O>O>[Cl:22][C:6]1[CH:5]=[N:4][CH:3]=[C:2]([Cl:1])[C:7]=1[S:8][C:9]1[S:13][C:12]([C:14]([OH:16])=[O:15])=[CH:11][C:10]=1[N+:19]([O-:21])=[O:20]参与物
4
反应条件
- 温度
- 100 °C
实验过程
Ethyl 5-[(3,5-dichloro-4-pyridyl)sulfanyl]-4-nitro-thiophene-2-carboxylate (1.8 g, 4.74 mmol) was added to a solution of concentrated sulfuric acid (10 mL) diluted with water (20 mL), and the resulting mixture was heated at 100° C. for 5 hours. After this time, the mixture was poured into ice (4.5 mL) and stirred at room temperature for 20 minutes, then the resulting solid was collected by filtration, washed with water and dried in vacuo at 40° C. overnight to afford the title product as a white solid (1.3 g, 78% yield). 1H NMR (400 MHz, d6-DMSO) δ: 9.0 (2H, s), 8.1 (1H, s). MS m/z: 350.85, 352.90 [M+H]+.
后处理
- filtrationthe resulting solid was collected by filtration
- washwashed with water
- customdried in vacuo at 40° C. overnight
来源与证据
- ORD记录
- ord-31fe241f358849b38de6d3b4dd6f088e
- 来源数据集
- uspto-grants-2014_03
- 专利号
- US08680139B2
关联笔记
加载中…