Cesium carbonate → N-Benzyl-4-methyl-2-(2-oxo-4-((5-phenyl-1,3,4-oxadiazol-2-yl)methoxy)pyridin-1(2H)-yl)thiazole-5-carboxamide

HRID 1887337

反応式

HRID 1887337 の反応式
[CH2:1]([NH:8][C:9]([C:11]1[S:15][C:14]([N:16]2[CH:21]=[CH:20][C:19]([OH:22])=[CH:18][C:17]2=[O:23])=[N:13][C:12]=1[CH3:24])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)([O-])[O-].[Cs+].[Cs+].Cl[CH2:32][C:33]1[O:34][C:35]([C:38]2[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=2)=[N:36][N:37]=1>CN(C)C=O>[CH2:1]([NH:8][C:9]([C:11]1[S:15][C:14]([N:16]2[CH:21]=[CH:20][C:19]([O:22][CH2:32][C:33]3[O:34][C:35]([C:38]4[CH:39]=[CH:40][CH:41]=[CH:42][CH:43]=4)=[N:36][N:37]=3)=[CH:18][C:17]2=[O:23])=[N:13][C:12]=1[CH3:24])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

参加物

5

反応物 3

HCID 10796Cesium carbonateHCID 3149412-(Chloromethyl)-5-phenyl-1,3,4-oxadiazoleHCID 54742338N-benzyl-2-(4-hydroxy-2-oxopyridin-1(2H)-yl)-4-methylthiazole-5-carboxamide

生成物 1

HCID 57744445N-Benzyl-4-methyl-2-(2-oxo-4-((5-phenyl-1,3,4-oxadiazol-2-yl)methoxy)pyridin-1(2H)-yl)thiazole-5-carboxamide収率 38%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
80 °C

実験手順

To a solution of N-benzyl-2-(4-hydroxy-2-oxopyridin-1(2H)-yl)-4-methylthiazole-5-carboxamide (0.20 g, 0.58 mmol) in anhydrous N,N-dimethylformamide (8 mL) was added cesium carbonate (0.32 g, 0.99 mmol) and catalytic amount of n-tetrabutylammonium iodide, followed by the addition of 2-(chloromethyl)-5-phenyl-1,3,4-oxadiazole (0.15 g, 0.76 mmol). The reaction mixture was heated at 80° C. for 20 hours and concentrated in vacuo, followed by the addition of dichloromethane (100 mL). The mixture was washed with water (70 mL). The organic layer was dried over anhydrous sodium sulfate and filtered. The solvent was concentrated in vacuo. The residue was recrystallized in ethyl acetate and hexane. The solid was collected by filtration and washed with methanol and hexanes to afford the title compound as a colorless solid in 38% yield (0.11 g): 1H NMR (300 MHz, DMSO-d6) δ 8.84 (t, J=5.9 Hz, 1H), 8.69 (d, J=8.0 Hz, 1H), 8.04-8.01 (m, 2H), 7.69-7.57 (m, 3H), 7.37-7.29 (m, 4H), 7.27-7.21 (m, 1H), 6.50-6.43 (m, 2H), 5.64 (s, 2H), 4.42 (d, J=5.9 Hz, 2H), 2.58 (s, 3H); MS (ES+) m/z 500.2 (M+1), 522.2 (M+23).

後処理

  1. concentrationconcentrated in vacuo
  2. additionfollowed by the addition of dichloromethane (100 mL)
  3. washThe mixture was washed with water (70 mL)
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationThe solvent was concentrated in vacuo
  7. customThe residue was recrystallized in ethyl acetate
  8. filtrationThe solid was collected by filtration
  9. washwashed with methanol and hexanes

出典と根拠

ORDレコード
ord-28165492c80c4f76ad3ebbb1b5850879
出典データセット
uspto-grants-2013_08
特許番号
US08501746B2

関連ノート

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