Methyl iodide → 9-Chloro-1-(2,4-dichlorophenyl)-6-(2-methoxy-1,1-dimethylethyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole

HRID 1628727ノート

反応式

HRID 1628727 の反応式
[H-].[Na+].[Cl:3][C:4]1[C:12]2[N:11]=[C:10]3[N:13]([C:17]4[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][C:18]=4[Cl:24])[CH2:14][CH2:15][CH2:16][N:9]3[C:8]=2[C:7]([C:25]([CH3:29])([CH3:28])[CH2:26][OH:27])=[CH:6][CH:5]=1.[CH3:30]I>CN(C)C=O.[Cl-].[NH4+]>[Cl:3][C:4]1[C:12]2[N:11]=[C:10]3[N:13]([C:17]4[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][C:18]=4[Cl:24])[CH2:14][CH2:15][CH2:16][N:9]3[C:8]=2[C:7]([C:25]([CH3:29])([CH3:28])[CH2:26][O:27][CH3:30])=[CH:6][CH:5]=1

参加物

6

反応物 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 577858392-[9-Chloro-1-(2,4-dichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-6-yl]-2-methylpropan-1-ol

生成物 1

HCID 577859339-Chloro-1-(2,4-dichlorophenyl)-6-(2-methoxy-1,1-dimethylethyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole収率 77%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 25517Ammonium Chloride溶媒

実験手順

Sodium hydride (60% in oil, 10.2 mg, 0.255 mmol) was added to a stirred solution of 2-[9-chloro-1-(2,4-dichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-6-yl]-2-methylpropan-1-ol (90.3 mg, 0.213 mmol) in N,N-dimethylformamide (2.0 mL) at room temperature. After stirring 5 min, methyl iodide (45.1 mg, 0.320 mmol) was added to the mixture, and the mixture was stirred at room temperature for 50 min. The mixture was diluted with aqueous saturated ammonium chloride, and extracted with ethyl acetate. The combined organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel eluting with a 10-40% ethyl acetate/n-hexane gradient mixture. The filtrate was concentrated in vacuo to give the solid, which was recrystallized from ethyl acetate/diisopropyl ether to give the title compound as a colorless crystal (71.5 mg, 0.163 mmol, 77%).

後処理

  1. stirringthe mixture was stirred at room temperature for 50 min
  2. extractionextracted with ethyl acetate
  3. washThe combined organic layer was washed with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash column chromatography on silica gel eluting with a 10-40% ethyl acetate/n-hexane gradient mixture
  8. concentrationThe filtrate was concentrated in vacuo
  9. customto give the solid, which
  10. customwas recrystallized from ethyl acetate/diisopropyl ether

出典と根拠

ORDレコード
ord-07d1371968a14656bd0bcbfa4ed32fe3
出典データセット
uspto-grants-2014_07
特許番号
US08785460B2

反応ノート

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