Potassium Carbonate → 1-(2,4-Dichlorophenyl)-7-(diethylamino)-2,3,4,5-tetrahydro-1H-[1,3]diazepino[1,2-a]benzimidazol-4-ol

HRID 1399011ノート

反応式

HRID 1399011 の反応式
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[NH:9][C:10]1[N:14]([CH2:15][CH:16]([OH:20])[CH2:17][CH2:18]O)[C:13]2[C:21]([N:25]([CH2:28][CH3:29])[CH2:26][CH3:27])=[CH:22][CH:23]=[CH:24][C:12]=2[N:11]=1.CS(Cl)(=O)=O.C(=O)([O-])[O-].[K+].[K+]>N1C=CC=CC=1.C(=O)([O-])O.[Na+].C(OCC)(=O)C>[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[N:9]1[C:10]2=[N:11][C:12]3[CH:24]=[CH:23][CH:22]=[C:21]([N:25]([CH2:28][CH3:29])[CH2:26][CH3:27])[C:13]=3[N:14]2[CH2:15][CH:16]([OH:20])[CH2:17][CH2:18]1

参加物

7

反応物 3

HCID 11430Potassium CarbonateHCID 31297Methanesulfonyl chlorideHCID 687631674-[2-[(2,4-Dichlorophenyl)amino]-7-(diethylamino)-1H-benzimidazol-1-yl]butane-1,3-diol

生成物 1

HCID 577858071-(2,4-Dichlorophenyl)-7-(diethylamino)-2,3,4,5-tetrahydro-1H-[1,3]diazepino[1,2-a]benzimidazol-4-ol収率 65%

試薬・触媒・溶媒 3

HCID 1049Pyridine溶媒HCID 8857Ethyl Acetate溶媒HCID 516892Sodium Bicarbonate溶媒

実験手順

To a solution of 4-[2-[(2,4-dichlorophenyl)amino]-7-(diethylamino)-1H-benzimidazol-1-yl]butane-1,3-diol (Reference Example 84; 175 mg, 0.400 mmol) in pyridine (4 mL) was added methanesulfonyl chloride (0.0929 mL, 1.20 mmol) at 0° C. After the resultant mixture was stirred at 0° C. for 3 hr, the mixture was diluted with aqueous sodium hydrogen carbonate and extracted with ethyl acetate. The combined organic layer was washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The resulting mesylate was diluted with N,N-dimethylformamide (4 mL) and to the solution was added potassium carbonate (110 mg, 0.797 mmol) at room temperature. After the resultant mixture was stirred at 80° C. for 1 hr, the mixture was 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 40% ethyl acetate/n-hexane mixture to give the title compound as a solid (108 mg, 0.258 mmol, 65%). Analytically pure material was obtained by recrystallization from ethyl acetate/n-hexane.

後処理

  1. extractionextracted with ethyl acetate
  2. washThe combined organic layer was washed with brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. additionThe resulting mesylate was diluted with N,N-dimethylformamide (4 mL) and to the solution
  7. washwashed with water and brine
  8. dry with materialdried over anhydrous sodium sulfate
  9. filtrationfiltered
  10. concentrationconcentrated in vacuo
  11. customThe residue was purified by flash column chromatography on silica gel eluting with a 40% ethyl acetate/n-hexane mixture

出典と根拠

ORDレコード
ord-ce67bec4eb4041c8a5987651f2379364
出典データセット
uspto-grants-2014_12
特許番号
US08901141B2

反応ノート

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