Sodium Carbonate → Tert-butyl ({2-isobutyl-4-(4-methylphenyl)-6-[(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)methoxy]quinolin-3-yl}methyl)carbamate

HRID 1986464ノート

反応式

HRID 1986464 の反応式
[C:1]([CH2:3][O:4][C:5]1[CH:6]=[C:7]2[C:12](=[CH:13][CH:14]=1)[N:11]=[C:10]([CH2:15][CH:16]([CH3:18])[CH3:17])[C:9]([CH2:19][NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[C:8]2[C:28]1[CH:33]=[CH:32][C:31]([CH3:34])=[CH:30][CH:29]=1)#[N:2].[Cl-].O[NH3+].[C:38](=[O:41])([O-])[O-:39].[Na+].[Na+].C(N1C=CN=C1)([N:46]1C=CN=C1)=O>O.C(O)C>[CH2:15]([C:10]1[C:9]([CH2:19][NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[C:8]([C:28]2[CH:33]=[CH:32][C:31]([CH3:34])=[CH:30][CH:29]=2)[C:7]2[C:12](=[CH:13][CH:14]=[C:5]([O:4][CH2:3][C:1]3[NH:46][C:38](=[O:41])[O:39][N:2]=3)[CH:6]=2)[N:11]=1)[CH:16]([CH3:17])[CH3:18]

参加物

7

反応物 4

HCID 10340Sodium CarbonateHCID 21645Hydroxylamine HClHCID 682631,1'-CarbonyldiimidazoleHCID 86605640Tert-butyl {[6-(cyanomethoxy)-2-isobutyl-4-(4-methylphenyl)quinolin-3-yl]methyl}carbamate

生成物 1

HCID 136385126Tert-butyl ({2-isobutyl-4-(4-methylphenyl)-6-[(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)methoxy]quinolin-3-yl}methyl)carbamate収率 35%

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 962Water溶媒2 回

反応条件

温度
70 °C

実験手順

A mixture of tert-butyl {[6-(cyanomethoxy)-2-isobutyl-4-(4-methylphenyl)quinolin-3-yl]methyl}carbamate (0.46 g, 1.0 mmol), hydroxyammonium chloride (0.21 g, 3.0 mmol), sodium carbonate (0.43 g, 4.0 mmol) and ethanol (10 ml) was stirred at 70° C. for 17 hrs. Water was added to the reaction mixture and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was dissolved in tetrahydrofuran (10 ml). 1,1′-Carbonylbis-1H-imidazole (0.32 g, 2.0 mmol) was added and the mixture was stirred at 70° C. for 24 hrs. Water was added to the reaction mixture and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography to give tert-butyl ({2-isobutyl-4-(4-methylphenyl)-6-[(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)methoxy]quinolin-3-yl}methyl)carbamate (0.18 g, yield 35%) as pale-yellow crystals.

後処理

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. dissolutionThe residue was dissolved in tetrahydrofuran (10 ml)
  6. stirringthe mixture was stirred at 70° C. for 24 hrs
  7. extractionthe mixture was extracted with ethyl acetate
  8. washThe extract was washed with saturated brine
  9. dry with materialdried over anhydrous magnesium sulfate
  10. concentrationconcentrated under reduced pressure
  11. customThe residue was purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-1b065cf9c3ca4bb797ff697fdde62bdc
出典データセット
uspto-grants-2009_06
特許番号
US07547710B2

反応ノート

読み込み中…