Potassium Carbonate → Methyl 9-chloro-1-(2-methoxy-4,6-dimethylpyrimidin-5-yl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carboxylate

HRID 1629020ノート

反応式

HRID 1629020 の反応式
[Cl:1][C:2]1[C:10]2[N:9]=[C:8]([NH:11][C:12]3[C:13]([CH3:21])=[N:14][C:15]([O:19][CH3:20])=[N:16][C:17]=3[CH3:18])[N:7]([CH2:22][CH2:23][CH2:24]Cl)[C:6]=2[C:5]([C:26]([O:28][CH3:29])=[O:27])=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O.C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:26]([O:28][CH3:29])=[O:27])=[C:6]2[C:10]=1[N:9]=[C:8]1[N:11]([C:12]3[C:17]([CH3:18])=[N:16][C:15]([O:19][CH3:20])=[N:14][C:13]=3[CH3:21])[CH2:24][CH2:23][CH2:22][N:7]21

参加物

5

反応物 2

HCID 11430Potassium CarbonateHCID 68772370methyl 4-chloro-1-(3-chloropropyl)-2-[(2-methoxy-4,6-dimethylpyrimidin-5-yl)amino]1H-benzimidazole-7-carboxylate

生成物 1

HCID 57786073Methyl 9-chloro-1-(2-methoxy-4,6-dimethylpyrimidin-5-yl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carboxylate収率 98%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
80 °C

実験手順

A mixture of methyl 4-chloro-1-(3-chloropropyl)-2-[(2-methoxy-4,6-dimethylpyrimidin-5-yl)amino]-1H-benzimidazole-7-carboxylate (560 mg, 1.28 mmol) and potassium carbonate (1.92 mmol) in N,N-dimethylformamide (5.6 mL) was stirred at 80° C. for 1 h, diluted with ethyl acetate, washed with water and brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel eluting with a 50-100% ethyl acetate/n-hexane gradient mixture to give the title compound as a colorless solid (504 mg, 1.25 mmol, 98%).

後処理

  1. washwashed with water and brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by flash column chromatography on silica gel eluting with a 50-100% ethyl acetate/n-hexane gradient mixture

出典と根拠

ORDレコード
ord-3277d7c0a3334cd899005bcdddd5ba2f
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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