Acetyl chloride → HCID 21964308、化合物
反応式
[CH3:1][C:2]1[CH:3]=[C:4]([C:8]2[CH:9]=[C:10]3[C:14](=[CH:15][CH:16]=2)[NH:13][C:12]([CH2:17][OH:18])=[CH:11]3)[CH:5]=[CH:6][CH:7]=1.[C:19](Cl)(=[O:21])[CH3:20]>>[C:19]([O:18][CH2:17][C:12]1[NH:13][C:14]2[C:10]([CH:11]=1)=[CH:9][C:8]([C:4]1[CH:5]=[CH:6][CH:7]=[C:2]([CH3:1])[CH:3]=1)=[CH:16][CH:15]=2)(=[O:21])[CH3:20]参加物
実験手順
A mixture of (5-bromo-1H-indol-2-yl) methanol (9 g, 39.8 mmol), 3-methylbenzeneboronic acid (6.14 g, 43.78 mmol), potassium carbonate (13.75 g, 99.5 mmol), palladium(II) acetate (0.045 g) and tetrabutylammonium bromide (12.84 g, 39.8 mmol) in 10% dioxane in water (degassed, 0.38 L) was stirred at 70° C. The reaction was monitored by TLC. Additional 3-methylbenzeneboronic acid (5.6 g, 39.8 mmol) was added. After no 5-bromo-1-(4-tert-butylbenzyl)-1H-indole was detected by TLC, the reaction was cooled to room temperature and the solvent was decanted. The residual thick oil was stirred with hexane. The hexane was decanted and the residue was partitioned between water and ethyl acetate. The ethyl acetate layer was separated, washed with water filtered and concentrated. The residue was purified by flash column chromatography using hexane/ethyl acetate (55:45) as an eluant to give [5-(3-Methylphenyl)-1H-indol-2-yl]methanol as a brown solid (6.0 g). Reaction of [5-(3-Methylphenyl)-1H-indol-2-yl]methanol with acetyl chloride according to the procedure described in step 4 of Example 1 afforded the title compound as an oil (3.94 g); Mass spectrum (ESI, [M−H]−) m/z 278. 1H NMR (400 MHz, DMSO-d6) δ 7.76 (s, 1H), 7.46 (s, 1H), 7.42-7.36 (m, 3H), 7.30 (s, 1H), 7.10 (d, 1H, J=7.48 Hz), 6.50 (s, 1H), 2.37 (s, 3H), and 2.07 ppm (s, 3H).
出典と根拠
- ORDレコード
- ord-2867bc9e1ab94e10ab1af238a483cf35
- 出典データセット
- uspto-grants-2008_12
- 特許番号
- US07459478B2
反応ノート
読み込み中…