反応式
[Mg].[CH2:2]([CH:4]([CH2:7][CH2:8][CH2:9][CH3:10])[CH2:5]Br)[CH3:3].[S:11]1[CH:15]=[CH:14][C:13]2[C:16](=O)[C:17]3[S:18][CH:19]=[CH:20][C:21]=3[C:22](=O)[C:12]1=2.Cl[Sn]Cl>[Cl-].[Na+].O.C1COCC1>[CH2:2]([CH:4]([CH2:7][CH2:8][CH2:9][CH3:10])[CH2:5][C:16]1[C:17]2[S:18][CH:19]=[CH:20][C:21]=2[C:22]([CH2:5][CH:4]([CH2:2][CH3:3])[CH2:7][CH2:8][CH2:9][CH3:10])=[C:12]2[S:11][CH:15]=[CH:14][C:13]=12)[CH3:3]参加物
実験手順
To a 100 mL flask under nitrogen was added magnesium (656 mg, 27 mmol) and anhydrous THF (10 mL). The mixture was heated under reflux and 2-ethylhexyl bromide (5.6 mL, mmol) was added dropwise. The reaction mixture was kept at refluxing temperatures until all magnesium was consumed. After cooling down, 4,8-dihydrobenzo[1,2-b:4,5-b′]dithiophene-4,8-dione (1.1 g, 5.0 mmol) was added in one portion. After refluxing for 1 hour more, it was cooled down again to room temperature. SnCl2 solution (7.5 g in 19 mL 10% HCl) was slowly added dropwise and then the mixture was kept at 60° C. for 1 hour. After cooling down, brine (11 mL) was added. The organic phase was separated and dried over Na2SO4. The residue after vacuum evaporation was purified by column chromatography with hexane as eluent and gave a pale yellow oil (910 mg, yield 43%). 1H NMR (CDCl3, 500 MHz) δ=7.47 (d, J=6.0 Hz, 2H), 7.45 (d, J=6.0 Hz, 2H), 3.08-3.20 (m, 4H), 1.92-2.04 (m, 2H), 1.13-1.49 (m, 16H), 0.91 (t, J=7.0 Hz, 6H), 0.85 (t, J=7.0 Hz, 6H).
後処理
- temperatureThe mixture was heated
- temperatureunder reflux
- customwas consumed
- temperatureAfter cooling down
- temperatureAfter refluxing for 1 hour more
- temperatureAfter cooling down
- customThe organic phase was separated
- dry with materialdried over Na2SO4
- customThe residue after vacuum evaporation
- customwas purified by column chromatography with hexane as eluent
出典と根拠
- ORDレコード
- ord-f3a71e268aec4b88b46f935d0865b0c8
- 出典データセット
- uspto-grants-2014_06
- 特許番号
- US08748739B2
関連ノート
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