Imidazole → 3-(2-{[tert-Butyl(diphenyl)silyl]oxy}ethyl)-1-(2-methyl-4-nitrophenyl)pyridin-2(1H)-one

HRID 452219ノート

反応式

HRID 452219 の反応式
[OH:1][CH2:2][CH2:3][C:4]1[C:5](=[O:20])[N:6]([C:10]2[CH:15]=[CH:14][C:13]([N+:16]([O-:18])=[O:17])=[CH:12][C:11]=2[CH3:19])[CH:7]=[CH:8][CH:9]=1.N1C=CN=C1.[C:26]([Si:30](Cl)([C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1)[C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1)([CH3:29])([CH3:28])[CH3:27]>CN(C)C=O.O>[Si:30]([O:1][CH2:2][CH2:3][C:4]1[C:5](=[O:20])[N:6]([C:10]2[CH:15]=[CH:14][C:13]([N+:16]([O-:18])=[O:17])=[CH:12][C:11]=2[CH3:19])[CH:7]=[CH:8][CH:9]=1)([C:26]([CH3:29])([CH3:28])[CH3:27])([C:37]1[CH:38]=[CH:39][CH:40]=[CH:41][CH:42]=1)[C:31]1[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=1

参加物

6

反応物 3

HCID 795ImidazoleHCID 94078tert-ButyldiphenylchlorosilaneHCID 569267333-(2-Hydroxyethyl)-1-(2-methyl-4-nitrophenyl)pyridin-2(1H)-one

生成物 1

HCID 594102163-(2-{[tert-Butyl(diphenyl)silyl]oxy}ethyl)-1-(2-methyl-4-nitrophenyl)pyridin-2(1H)-one

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

38 g (138 mmol) of the compound from Example 24A are dissolved in 200 ml of anhydrous N,N-dimethylformamide, and 12.2 g (198 mmol) of imidazole and, a little at a time, 46 g (135 mmol) of tert-butyl(chloro)diphenylsilane are added at 0° C. The mixture is stirred overnight and then diluted with water and extracted three times with ethyl acetate. The combined organic phases are washed twice with saturated sodium chloride solution, dried over magnesium sulphate, filtered and evaporated under reduced pressure. The residue is applied to silica gel and chromatographed using a gradient of cyclohexane and ethyl acetate. The product-containing fractions are combined and evaporated to dryness under reduced pressure. This gives 62 g (88% of theory) of the desired product.

後処理

  1. extractionextracted three times with ethyl acetate
  2. washThe combined organic phases are washed twice with saturated sodium chloride solution
  3. dry with materialdried over magnesium sulphate
  4. filtrationfiltered
  5. customevaporated under reduced pressure
  6. customchromatographed
  7. customevaporated to dryness under reduced pressure

出典と根拠

ORDレコード
ord-c6f6a1899d3b40db9f727b43ca5d53b7
出典データセット
uspto-grants-2013_07
特許番号
US08487111B2

反応ノート

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