N,N'-Dimethylethylenediamine → 6-chloro-1-(1-ethyl-1H-pyrazol-4-yl)-7-fluoro-1H-indole

HRID 522772ノート

反応式

HRID 522772 の反応式
[Cl:1][C:2]1[C:10]([F:11])=[C:9]2[C:5]([CH:6]=[CH:7][NH:8]2)=[CH:4][CH:3]=1.Br[C:13]1[CH:14]=[N:15][N:16]([CH2:18][CH3:19])[CH:17]=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].CNCCNC>C1(C)C=CC=CC=1.CCCCCC>[Cl:1][C:2]1[C:10]([F:11])=[C:9]2[C:5]([CH:6]=[CH:7][N:8]2[C:13]2[CH:14]=[N:15][N:16]([CH2:18][CH3:19])[CH:17]=2)=[CH:4][CH:3]=1

参加物

7

反応物 4

HCID 8070N,N'-DimethylethylenediamineHCID 62657Potassium Phosphate, TribasicHCID 125652014-Bromo-1-ethyl-1H-pyrazoleHCID 226127456-chloro-7-fluoro-1H-indole

生成物 1

HCID 1181041956-chloro-1-(1-ethyl-1H-pyrazol-4-yl)-7-fluoro-1H-indole収率 36%

試薬・触媒・溶媒 2

HCID 1140Toluene溶媒HCID 8058Hexane溶媒

反応条件

温度
140 °C

実験手順

To a stirred solution of 6-chloro-7-fluoro-1H-indole 8 (400 mg, 2.36 mmol) in toluene (10 mL) were added 4-bromo-1-ethyl-1H-pyrazole 4 (Step 3 above; 414 mg, 2.36 mmol), potassium phosphate (1.25 g, 5.91 mmol), N,N′-dimethylethylenediamine (84 mg, 0.95 mmol) and Cu(I)I (45 mg, 0.24 mmol) at RT under inert atmosphere. The resulted solution was purged with argon and sealed the tube. The reaction mixture was then heated to 140° C. for 16 h. After completion of the reaction (monitored by TLC), the reaction mixture was cooled to RT, diluted with hexane (10 mL) and filtered through a short pad of celite. The filtrate was washed with water (2×10 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to obtain the crude. The crude was purified (silica gel chromatography; 8-10% EtOAc/Hexanes) to afford compound 9 (224 mg, 36%) as a light brown thick liquid. 1H NMR (500 MHz, CDCl3): δ 7.64 (s, 1H), 7.61 (s, 1H), 7.31 (d, J=8.0 Hz, 1H), 7.12-7.07 (m, 2H), 6.60-6.59 (m, 1H), 4.22 (q, J=7.5 Hz, 2H), 1.55 (t, J=7.5 Hz, 3H); LC-MS (ESI): 94.7%; m/z 264.1 (M+H+); (column: X Select C-18, 50×3.0 mm, 3.5 μm); RT 3.87 min; 5 mM NH4OAc: ACN; 0.8 mL/min).

後処理

  1. customThe resulted solution was purged with argon
  2. customsealed the tube
  3. customAfter completion of the reaction (monitored by TLC)
  4. temperaturethe reaction mixture was cooled to RT
  5. filtrationfiltered through a short pad of celite
  6. washThe filtrate was washed with water (2×10 mL)
  7. dry with materialdried over Na2SO4
  8. filtrationfiltered
  9. concentrationconcentrated under reduced pressure
  10. customto obtain the crude
  11. customThe crude was purified (silica gel chromatography; 8-10% EtOAc/Hexanes)

出典と根拠

ORDレコード
ord-579afc187e574b8aa18d4fdbc77b32f0
出典データセット
uspto-grants-2016_05
特許番号
US09334261B2

反応ノート

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