Hydrochloric Acid → N-Benzyl-2-cyclohexyl-2-[2-(2,6-dimethoxy-pyridin-3-yl)-5,6-difluoro-benzoimidazol-1-yl]-acetamide

HRID 1161307

反応式

HRID 1161307 の反応式
ClC1C=C(C=CC=1[NH:11][C:12](=[O:38])[CH:13]([N:20]1[C:24]2[CH:25]=[C:26]([F:30])[C:27]([F:29])=[CH:28][C:23]=2[N:22]=C1C1C=NC(Cl)=CC=1)[CH:14]1[CH2:19][CH2:18][CH2:17][CH2:16][CH2:15]1)C(O)=O.[CH:39]1([CH:45]=O)[CH2:44][CH2:43][CH2:42][CH2:41][CH2:40]1.[CH3:47][O:48][C:49]1[N:57]=[C:56]([O:58][CH3:59])[CH:55]=[CH:54][C:50]=1[C:51](O)=O.[N+](CC1C=CC=CC=1)#[C-].Cl>CO.O1CCOCC1>[CH2:45]([NH:11][C:12](=[O:38])[CH:13]([CH:14]1[CH2:15][CH2:16][CH2:17][CH2:18][CH2:19]1)[N:20]1[C:24]2[CH:25]=[C:26]([F:30])[C:27]([F:29])=[CH:28][C:23]=2[N:22]=[C:51]1[C:50]1[C:49]([O:48][CH3:47])=[N:57][C:56]([O:58][CH3:59])=[CH:55][CH:54]=1)[C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1

参加物

8

反応物 5

HCID 313Hydrochloric AcidHCID 16275CyclohexanecarboxaldehydeHCID 82558Benzyl isocyanideHCID 8531782,6-Dimethoxypyridine-3-carboxylic acidHCID 441976913-Chloro-4-{2-[2-(6-chloro-pyridin-3-yl)-5,6-difluoro-benzoimidazol-1-yl]-2-cyclohexyl-acetylamino}-benzoic acid2 回

生成物 1

HCID 66619365N-Benzyl-2-cyclohexyl-2-[2-(2,6-dimethoxy-pyridin-3-yl)-5,6-difluoro-benzoimidazol-1-yl]-acetamide収率 67%

試薬・触媒・溶媒 2

HCID 887Methanol溶媒HCID 312751,4-Dioxane溶媒

実験手順

To a solution of (2-amino-4,5-difluoro-phenyl)-carbamic acid tert-butyl ester (2.50 g, 10.24 mmol, 1.0 equiv; example 1, intermediate b) in methanol (30 mL) was added cyclohexanecarbaldehyde (1.15 g, 1.23 mL, 10.24 mmol, 1.0 equiv; [2043-61-0]) and the mixture stirred at rt. After 30 min, 2,6-dimethoxy-nicotinic acid (1.88 g, 10.24 mmol, 1.0 equiv; [CAS RN 16727-43-8]) and isocyanomethyl-benzene (1.20 g, 1.25 mL, 10.24 mmol, 1.0 equiv; [931-53-3]) were added and stirring continued at rt for 2 h. A solution of 4 M HCl in dioxane (20 mL) was added and the reaction mixture stirred at rt overnight. The solution was concentrated by evaporation under reduced pressure, the pH adjusted to 9 by addition of a solution of 1 M NaHCO3 and the aqueous layer extracted with dichloromethane. The combined organic phases were dried over MgSO4 and concentrated by evaporation under reduced pressure. The crude material was purified by silica column chromatography using a MPLC system (CombiFlash Companion, Isco Inc.) eluting with a gradient of heptane/ethyl acetate to give 3.57 g (60%) of the title compound. MS (ES+): 522 (M+H).

後処理

  1. stirringstirring
  2. waitcontinued at rt for 2 h
  3. stirringthe reaction mixture stirred at rt overnight
  4. concentrationThe solution was concentrated by evaporation under reduced pressure
  5. additionthe pH adjusted to 9 by addition of a solution of 1 M NaHCO3
  6. extractionthe aqueous layer extracted with dichloromethane
  7. dry with materialThe combined organic phases were dried over MgSO4
  8. concentrationconcentrated by evaporation under reduced pressure
  9. customThe crude material was purified by silica column chromatography
  10. washeluting with a gradient of heptane/ethyl acetate

出典と根拠

ORDレコード
ord-6d2deffc43194fb5936c4980a70f8ddb
出典データセット
uspto-grants-2010_10
特許番号
US07816540B2

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