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Ethyl Acetate → 3-[2-{2-(N-carboxymethyl-N-methylcarbamoyl)methyl-1-cyclohexenyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine

HRID 965353
ノート
印刷プレビュー

反応式

HRID 965353 の反応式
C([O:3][C:4]([CH2:6][N:7]([CH3:39])[C:8]([CH2:10][C:11]1[CH2:16][CH2:15][CH2:14][CH2:13][C:12]=1[N:17]1[C:22](=[O:23])[CH:21]=[CH:20][C:19]([C:24]2[C:25]([C:33]3[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=3)=[N:26][N:27]3[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=23)=[N:18]1)=[O:9])=[O:5])C.[OH-].[Na+].C(OCC)(=O)C>O1CCOCC1.O>[C:4]([CH2:6][N:7]([CH3:39])[C:8]([CH2:10][C:11]1[CH2:16][CH2:15][CH2:14][CH2:13][C:12]=1[N:17]1[C:22](=[O:23])[CH:21]=[CH:20][C:19]([C:24]2[C:25]([C:33]3[CH:34]=[CH:35][CH:36]=[CH:37][CH:38]=3)=[N:26][N:27]3[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=23)=[N:18]1)=[O:9])([OH:5])=[O:3]
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 8857Ethyl AcetateHCID 14798Sodium HydroxideHCID 226292113-[2-{2-(N-ethoxycarbonylmethyl-N-methylcarbamoyl)methyl-1-cyclohexenyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine

生成物 1

HCID 226291853-[2-{2-(N-carboxymethyl-N-methylcarbamoyl)methyl-1-cyclohexenyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine収率 44.6%

試薬・触媒・溶媒 2

HCID 962
Water
溶媒
HCID 312751,4-Dioxane溶媒

実験手順

To a solution of 3-[2-{2-(N-ethoxycarbonylmethyl-N-methylcarbamoyl)methyl-1-cyclohexenyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine (710 mg) in a mixture of dioxane (7 ml) and water (4 ml) was added 1N-aqueous sodium hydroxide solution (3.4 ml), which was stirred for two hours at room temperature. The reaction mixture was poured into ethyl acetate (100 ml) and aqueous layer was collected, which was adjusted to pH 1.5 with 6N-aqueous hydrochloric acid and extracted with ethyl acetate (100 ml×2). Organic layers were combined, washed in turn with water (50 ml×3) and brine (50 ml×2), and dried over magnesium sulfate. Evaporation of the solvent gave a residue, which was chromatographed on silica gel (80 ml) eluting in turn with dichloromethane, 5%, 10%, 15% methanol in dichloromethane. Fractions containing desired product were collected. Evaporation of the solvent gave a residue, which was recrystallized from a mixture of dichloromethane and n-hexane to give 3-[2-{2-(N-carboxymethyl-N-methylcarbamoyl)methyl-1-cyclohexenyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine (300 mg).

後処理

  1. customwas collected
  2. extractionextracted with ethyl acetate (100 ml×2)
  3. washwashed in turn with water (50 ml×3) and brine (50 ml×2)
  4. dry with materialdried over magnesium sulfate
  5. customEvaporation of the solvent
  6. customgave a residue, which
  7. customwas chromatographed on silica gel (80 ml)
  8. washeluting in turn with dichloromethane, 5%, 10%, 15% methanol in dichloromethane
  9. additionFractions containing desired product
  10. customwere collected
  11. customEvaporation of the solvent
  12. customgave a residue, which
  13. customwas recrystallized from a mixture of dichloromethane and n-hexane

出典と根拠

ORDレコード
ord-a0238eb8f5da42ba98a3f9e5462f2054
出典データセット
uspto-grants-1998_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US05773530

反応ノート

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