Nitrogen → 6-Chloro-5-(4-ethoxyphenyl)-1H-indole

HRID 338303ノート

反応式

HRID 338303 の反応式
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][C:10]=1[Cl:11])[NH:7][CH:6]=[CH:5]2.C(=O)([O-])[O-].[Na+].[Na+].[CH2:18]([O:20][C:21]1[CH:26]=[CH:25][C:24](B(O)O)=[CH:23][CH:22]=1)[CH3:19].N#N>CCO.O.C1(C)C=CC=CC=1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:11][C:10]1[CH:9]=[C:8]2[C:4]([CH:5]=[CH:6][NH:7]2)=[CH:3][C:2]=1[C:24]1[CH:25]=[CH:26][C:21]([O:20][CH2:18][CH3:19])=[CH:22][CH:23]=1

参加物

7

反応物 4

HCID 947NitrogenHCID 10340Sodium CarbonateHCID 27343514-Ethoxyphenylboronic acidHCID 144196195-Bromo-6-chloro-1H-indole

生成物 1

HCID 866986496-Chloro-5-(4-ethoxyphenyl)-1H-indole収率 86.3%

試薬・触媒・溶媒 2

HCID 178418397HCID 178418397、化合物触媒HCID 86587398Ethanol toluene water溶媒

実験手順

A solution of 5-bromo-6-chloro-1H-indole (5.92 g, 25.7 mmol), sodium carbonate (5.45 g, 51.4 mmol) and (4-ethoxyphenyl)boronic acid (5.12 g, 30.8 mmol) in EtOH/water/toluene (30 mL, each) was degassed with N2 for 5 minutes, treated with tetrakis(triphenylphosphine)palladium (1.8 g, 16.57 mmol) and degassed for an additional 5 minutes. The reaction mixture was heated to reflux under N2 for 16 hours. The reaction mixture was cooled to room temperature, poured into dilute NH4Cl solution (200 mL), and extracted with CH2Cl2 (3×100 mL). The combined organic layers were washed with brine (100 mL), dried over Na2SO4 and concentrated in vacuo. The crude material was purified by flash chromatography (9-25% EtOAc/petroleum ether) to afford the title compound (6.03 g, 86%) as a white solid. 1H NMR (400 MHz, CDCl3) δ 8.07 (br, 1H), 7.50 (s, 1H), 7.43 (s, 1H), 7.33 (d, 2H), 7.15 (m, 1H), 6.89 (d, 2H), 6.46 (s, 1H), 4.02 (q, J=7.00 Hz, 2H), 1.36 (t, J=7.00 Hz, 3H).

後処理

  1. customdegassed for an additional 5 minutes
  2. temperatureThe reaction mixture was heated
  3. temperatureto reflux under N2 for 16 hours
  4. additionpoured into dilute NH4Cl solution (200 mL)
  5. extractionextracted with CH2Cl2 (3×100 mL)
  6. washThe combined organic layers were washed with brine (100 mL)
  7. dry with materialdried over Na2SO4
  8. concentrationconcentrated in vacuo
  9. customThe crude material was purified by flash chromatography (9-25% EtOAc/petroleum ether)

出典と根拠

ORDレコード
ord-f1b1c31eabcd4674a86b4f29e74e584c
出典データセット
uspto-grants-2014_11
特許番号
US08889730B2

反応ノート

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