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Tetrabutylammonium Fluoride → 3-[2-(3-Hydroxycyclohexyl)-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine

HRID 276952
ノート
印刷プレビュー

反応式

HRID 276952 の反応式
[Si]([O:8][CH:9]1[CH2:14][CH2:13][CH2:12][CH:11]([N:15]2[C:20](=[O:21])[CH:19]=[CH:18][C:17]([C:22]3[C:23]([C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=4)=[N:24][N:25]4[CH:30]=[CH:29][CH:28]=[CH:27][C:26]=34)=[N:16]2)[CH2:10]1)(C(C)(C)C)(C)C.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>O1CCCC1.C(OCC)(=O)C>[OH:8][CH:9]1[CH2:14][CH2:13][CH2:12][CH:11]([N:15]2[C:20](=[O:21])[CH:19]=[CH:18][C:17]([C:22]3[C:23]([C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=4)=[N:24][N:25]4[CH:30]=[CH:29][CH:28]=[CH:27][C:26]=34)=[N:16]2)[CH2:10]1
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 2724141Tetrabutylammonium FluorideHCID 226291913-[2-{3-(Tert-butyldimethylsilyloxy)cyclohexyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine

生成物 1

HCID 226292043-[2-(3-Hydroxycyclohexyl)-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine収率 97.7%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒
HCID 8857
Ethyl Acetate
溶媒

実験手順

A solution of 3-[2-{3-(tert-butyldimethylsilyloxy)cyclohexyl}-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine (570 mg) and 70% aqueous tetrabutylammonium fluoride (4.3 g) in tetrahydrofuran (10 ml) was stirred for overnight at room temperature. A reaction mixture was diluted with ethyl acetate (100 ml), which was washed in turn with water (50 ml×4) and saturated sodium chloride in water (50 ml×2), and dried over magnesium sulfate. Evaporation of the solvent gave a residue, which was chromatographed on silica gel (40 ml) eluting in turn with 30%, 50% ethyl acetate in dichloromethane and ethyl acetate. Fractions containing desired product were concentrated under reduced pressure to give residue, which was recrystallized from ethanol to give 3-[2-(3-hydroxycyclohexyl)-3-oxo-2,3-dihydropyridazin-6-yl]-2-phenylpyrazolo[1,5-a]pyridine (430 mg).

後処理

  1. washwas washed in turn with water (50 ml×4) and saturated sodium chloride in water (50 ml×2)
  2. dry with materialdried over magnesium sulfate
  3. customEvaporation of the solvent
  4. customgave a residue, which
  5. customwas chromatographed on silica gel (40 ml)
  6. washeluting in turn with 30%, 50% ethyl acetate in dichloromethane and ethyl acetate
  7. additionFractions containing desired product
  8. concentrationwere concentrated under reduced pressure
  9. customto give residue, which
  10. customwas recrystallized from ethanol

出典と根拠

ORDレコード
ord-1b3b5652a39547f282010dcdcbdd20e1
出典データセット
uspto-grants-2002_03
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US06355640B1

反応ノート

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