1-Methylpiperazine → 8-(4-Methyl-piperazin-1-yl)-3-(2-methylsulfanyl-pyrimidin-4-yl)-imidazo[1,2-a]pyrazine

HRID 1186496ノート

反応式

HRID 1186496 の反応式
Cl[C:2]1[C:3]2[N:4]([C:8]([C:11]3[CH:16]=[CH:15][N:14]=[C:13]([S:17][CH3:18])[N:12]=3)=[CH:9][N:10]=2)[CH:5]=[CH:6][N:7]=1.[CH3:19][N:20]1[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]1.C(N(C(C)C)CC)(C)C>CC(O)C>[CH3:19][N:20]1[CH2:25][CH2:24][N:23]([C:2]2[C:3]3[N:4]([C:8]([C:11]4[CH:16]=[CH:15][N:14]=[C:13]([S:17][CH3:18])[N:12]=4)=[CH:9][N:10]=3)[CH:5]=[CH:6][N:7]=2)[CH2:22][CH2:21]1

参加物

5

反応物 3

HCID 531671-MethylpiperazineHCID 81531DiisopropylethylamineHCID 866709158-Chloro-3-(2-methylsulfanyl-pyrimidin-4-yl)-imidazo[1,2-a]pyrazine

生成物 1

HCID 682267268-(4-Methyl-piperazin-1-yl)-3-(2-methylsulfanyl-pyrimidin-4-yl)-imidazo[1,2-a]pyrazine

試薬・触媒・溶媒 1

HCID 3776Isopropanol溶媒

実験手順

To a solution of 8-chloro-3-(2-methylsulfanyl-pyrimidin-4-yl)-imidazo[1,2-a]pyrazine (from Example 44 supra) (1.36 g, 4.91 mmol) in iPrOH (100 mL) was added 1-methylpiperazine (0.64 g, 6.38 mmol) followed by diisopropylethylamine (0.82 g, 6.38 mmol). The reaction mixture was stirred at reflux for 15 hours and the solvent was removed under reduced pressure. The residue was extracted with dichloromethane (150 mL) and washed with water (3×25 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to afford 8-(4-methyl-piperazin-1-yl)-3-(2-methylsulfanyl-pyrimidin-4-yl)-imidazo[1,2-a]pyrazine. (Yield 1.4 g, 83.7%). LC-MS: [M+H]+ 342.

後処理

  1. temperatureat reflux for 15 hours
  2. customthe solvent was removed under reduced pressure
  3. extractionThe residue was extracted with dichloromethane (150 mL)
  4. washwashed with water (3×25 mL)
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated

出典と根拠

ORDレコード
ord-5adcb3fefeea48ee902cce10c6fcf5fe
出典データセット
uspto-grants-2014_03
特許番号
US08673905B2

反応ノート

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