反応式
[I:1][C:2]1[CH:3]=[CH:4][C:5]([NH2:10])=[C:6]([CH:9]=1)[CH:7]=O.CCCCCCC=CCCC.[F:22][C:23]([F:32])([F:31])/[CH:24]=[CH:25]/[C:26]([O:28][CH2:29][CH3:30])=[O:27]>CN1CCCN(C)C1=O>[I:1][C:2]1[CH:9]=[C:6]2[C:5](=[CH:4][CH:3]=1)[NH:10][CH:24]([C:23]([F:22])([F:32])[F:31])[C:25]([C:26]([O:28][CH2:29][CH3:30])=[O:27])=[CH:7]2参加物
反応条件
- 温度
- 60 °C
実験手順
A mixture of 5-iodo-2-aminobenzaldehyde (24.0 g, 96.7 mmol), diazbicyclo[2.2.2]-undec-7-ene (32.2 g, 212.0 mmol), and ethyl 4,4,4-trifluorocrotonate (35.7 g, 212.0 mmol) in 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (48 mL) was heated at 60° C. for 8 hours. The solution was cooled to room temperature and the solution poured into ethyl acetate-hexanes (1:1, 500 mL). The solution was extracted with 2.5 N aqueous hydrochloric acid (2×200 mL), saturated aqueous ammonium chloride (2×200 mL), dried over sodium sulfate, filtered and concentrated in vacuo. The resulting dark yellow oil was dissolved in hexanes (100 mL) and fine yellow crystals formed upon standing. Vacuum filtration of this suspension yielded ethyl 6-iodo-1,2-dihydro-2-(trifluoromethyl)-3-quinolinecarboxylate as fine yellow crystals (19.3 g, 50% yield): mp 137-138° C. 1H NMR (CDCl3, 300 MHz) 7.62 (s, 1H), 7.36-7.48 (m, 2H), 6.43 (d, J=8.2 Hz), 5.36 (brs, 1H), 5.11 (q, 1H, J=7.1 Hz), 4.25 -4.35 (m, 2H), 1.34 (t, 3H, J=7.0 Hz). ESHRMS m/z 395.9716 (M−H, Calc'd 395.9708).
後処理
- temperatureThe solution was cooled to room temperature
- extractionThe solution was extracted with 2.5 N aqueous hydrochloric acid (2×200 mL), saturated aqueous ammonium chloride (2×200 mL)
- dry with materialdried over sodium sulfate
- filtrationfiltered
- concentrationconcentrated in vacuo
- dissolutionThe resulting dark yellow oil was dissolved in hexanes (100 mL)
- customfine yellow crystals formed
- filtrationVacuum filtration of this suspension
出典と根拠
- ORDレコード
- ord-00deb0a0257f45da8b4e75b18bb28d75
- 出典データセット
- uspto-grants-2001_08
- 特許番号
- US06271253B1
関連ノート
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