反応式
Cl[CH2:2][C:3]1[CH:4]=[C:5]([C:10]([O:12][CH3:13])=[O:11])[S:6][C:7]=1[CH2:8]Cl.[N+:14]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1[S:23]([NH2:26])(=[O:25])=[O:24])([O-:16])=[O:15].C(=O)([O-])[O-].[K+].[K+].O>CC(C)=O>[N+:14]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1[S:23]([N:26]1[CH2:2][C:3]2[CH:4]=[C:5]([C:10]([O:12][CH3:13])=[O:11])[S:6][C:7]=2[CH2:8]1)(=[O:24])=[O:25])([O-:16])=[O:15]参加物
実験手順
To a solution of methyl 4,5-bis(chloromethyl)thiophene-2-carboxylate (4.106 g, 17.17 mmol) and 2-nitrobenzenesulfonamide (3.825 g, 18.92 mmol) in acetone (40 mL) was added 2.5 M of potassium carbonate in water (20 mL, 50 mmol). The resulting biphasic mixture was stirred at room temperature for 1 hour then further heated at 45° C. overnight resulting in formation of precipitate. The reaction mixture was cooled to room temperature and the precipitate was collected by vacuum filtration. The solid obtained was washed with water followed by cold methanol and dried under vacuum to afford an off white solid (3.352 g, 53%). LCMS (FA) ES+ 369; 1H NMR (400 MHz, DMSO) δ 8.02 (ddd, J=7.8, 4.9, 1.4 Hz, 2H), 7.90 (td, J=7.7, 1.5 Hz, 1H), 7.84 (td, J=7.7, 1.4 Hz, 1H), 7.63 (s, 1H), 4.79 (t, J=2.9 Hz, 2H), 4.60 (t, J=2.9 Hz, 2H), 3.80 (s, 3H).
後処理
- temperaturethen further heated at 45° C. overnight
- customresulting in formation of precipitate
- temperatureThe reaction mixture was cooled to room temperature
- filtrationthe precipitate was collected by vacuum filtration
- customThe solid obtained
- washwas washed with water
- customdried under vacuum
出典と根拠
- ORDレコード
- ord-35685b8365cd4f66824334632e3f642e
- 出典データセット
- uspto-grants-2014_01
- 特許番号
- US08624040B2
関連ノート
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