Hydrazine hydrate (1:1) → 6-butyl-5-(4-cyclohexyloxy-phenyl)-2H-pyridazin-3-one

HRID 1971900

反応式

HRID 1971900 の反応式
C([O:3][C:4](=O)[CH:5](O)[CH:6]([C:13]1[CH:18]=[CH:17][C:16]([O:19][CH:20]2[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]2)=[CH:15][CH:14]=1)[C:7](=O)[CH2:8][CH2:9][CH2:10][CH3:11])C.O.[NH2:29][NH2:30]>C(O)(=O)C>[CH2:8]([C:7]1[C:6]([C:13]2[CH:18]=[CH:17][C:16]([O:19][CH:20]3[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]3)=[CH:15][CH:14]=2)=[CH:5][C:4](=[O:3])[NH:29][N:30]=1)[CH2:9][CH2:10][CH3:11]

参加物

4

反応物 2

HCID 24654Hydrazine hydrate (1:1)HCID 673757473-(4-Cyclohexyloxy-phenyl)-2-hydroxy-4-oxo-octanoic acid ethyl ester

生成物 1

HCID 673752856-butyl-5-(4-cyclohexyloxy-phenyl)-2H-pyridazin-3-one

試薬・触媒・溶媒 1

HCID 176Acetic Acid溶媒

反応条件

温度
100 °C

実験手順

To a stirred solution of the octanoic acid ethyl ester (105 mmol, 39.5 g) in glacial acetic acid (25.5 mL) was added hydrazine hydrate (525 mmol, 25.5 mL), and the reaction was heated at 100° C. for 12 h. After cooling, the volatiles were removed in vacuo, the residue was dissolved in ethyl acetate (300 mL). The organic layer was washed with water (100 mL), saturated NaHCO3 (3×100 mL), brine (100 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was recrystallized from a mixture of ethyl acetate (200 mL) and hexanes (300 mL) to afford 6-butyl-5-(4-cyclohexyloxy-phenyl)-2H-pyridazin-3-one.

後処理

  1. temperatureAfter cooling
  2. customthe volatiles were removed in vacuo
  3. dissolutionthe residue was dissolved in ethyl acetate (300 mL)
  4. washThe organic layer was washed with water (100 mL), saturated NaHCO3 (3×100 mL), brine (100 mL)
  5. dry with materialdried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was recrystallized from a mixture of ethyl acetate (200 mL) and hexanes (300 mL)

出典と根拠

ORDレコード
ord-13fbcb4e18c04e66b853b2bcdb0dafdf
出典データセット
uspto-grants-2013_04
特許番号
US08431575B2

関連ノート

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