Sodium hydride → 4-[(2,4-Dichloro-5-methoxyphenyl)amino]thieno[2,3-b]pyridine-5-carbonitrile

HRID 1178632

反応式

HRID 1178632 の反応式
[Cl:1][C:2]1[CH:8]=[C:7]([Cl:9])[C:6]([O:10][CH3:11])=[CH:5][C:3]=1[NH2:4].[H-].[Na+].Cl[C:15]1[C:20]([C:21]#[N:22])=[CH:19][N:18]=[C:17]2[S:23][CH:24]=[CH:25][C:16]=12>O1CCCC1>[Cl:1][C:2]1[CH:8]=[C:7]([Cl:9])[C:6]([O:10][CH3:11])=[CH:5][C:3]=1[NH:4][C:15]1[C:20]([C:21]#[N:22])=[CH:19][N:18]=[C:17]2[S:23][CH:24]=[CH:25][C:16]=12

参加物

5

反応物 3

HCID 24758Sodium hydrideHCID 14766362,4-Dichloro-5-methoxyanilineHCID 114129074-Chlorothieno[2,3-b]pyridine-5-carbonitrile

生成物 1

HCID 100434474-[(2,4-Dichloro-5-methoxyphenyl)amino]thieno[2,3-b]pyridine-5-carbonitrile収率 21.4%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

A mixture of 2,4-dichloro-5-methoxyaniline (300 mg, 1.57 mmol) and 60% sodium hydride (70 mg, 1.75 mmol) in 10 mL of tetrahydrofuran is heated at reflux for 30 minutes The solution is cooled and 4-chlorothieno[2,3-b]pyridine-5-carbonitrile (150 mg, 0.8 mmol) [Khan, M. A.; Guarconi, A. E., J. Heterocyclic Chem., 14, 807 (1977)] is added. The reaction mixture is heated at reflux for 3.5 hours. The resultant black solution is partitioned between ethyl acetate and water. The organic layer is washed with water, dried over magnesium sulfate, filtered and concentrated in vacuo. The residue is purified by flash column chromatography eluting with 2:3 ethyl acetate:hexane. The fractions containing product are combined and concentrated. Diethyl ether is added and the insoluble material is collected by filtration to provide 60 mg of 4-[(2,4-dichloro-5-methoxyphenyl)amino]thieno[2,3-b]pyridine-5-carbonitrile as a tan solid, mp 197–199° C.; 1H NMR (DMSO-d6) δ 3.85 (s, 3H), 7.38 (s, 1H), 7.68 (d, J=5.7 Hz, 1H), 7.76 (s, 1H), 7.81 (d, J=5.7 Hz, 1H), 8.43 (s, 1H), 9.80 (s, 1); MS 348.2 (M−H)−.

後処理

  1. temperatureis heated
  2. temperatureat reflux for 30 minutes The solution
  3. temperatureis cooled
  4. addition, 14, 807 (1977)] is added
  5. temperatureThe reaction mixture is heated
  6. temperatureat reflux for 3.5 hours
  7. customThe resultant black solution is partitioned between ethyl acetate and water
  8. washThe organic layer is washed with water
  9. dry with materialdried over magnesium sulfate
  10. filtrationfiltered
  11. concentrationconcentrated in vacuo
  12. customThe residue is purified by flash column chromatography
  13. washeluting with 2:3 ethyl acetate
  14. additionThe fractions containing product
  15. concentrationconcentrated
  16. additionDiethyl ether is added
  17. filtrationthe insoluble material is collected by filtration

出典と根拠

ORDレコード
ord-db26b062a1db483b815409c04922b21d
出典データセット
uspto-grants-2007_10
特許番号
US07276519B2

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