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Hydrochloric Acid → 3-{[3-methoxy-4-(5-methyl-2-phenyl-1,3-oxazol-4-ylmethoxy)benzyl]oxy}-1-phenyl-1H-pyrazole-5-carbonitrile

HRID 2221974
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HRID 2221974 반응식
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:21]=[CH:22][C:23]=1[O:24][CH2:25][C:26]1[N:27]=[C:28]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[O:29][C:30]=1[CH3:31])[CH2:6][O:7][C:8]1[CH:12]=[C:11]([CH:13]=O)[N:10]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[N:9]=1.Cl.NO.[N:41]1C=CC=CC=1.Cl>C(O)C>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:21]=[CH:22][C:23]=1[O:24][CH2:25][C:26]1[N:27]=[C:28]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[O:29][C:30]=1[CH3:31])[CH2:6][O:7][C:8]1[CH:12]=[C:11]([C:13]#[N:41])[N:10]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[N:9]=1
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참가 물질

6

반응물 4

HCID 313Hydrochloric AcidHCID 1049PyridineHCID 443297Hydroxyamine hydrochlorideHCID 866058923-{[3-methoxy-4-(5-methyl-2-phenyl-1,3-oxazol-4-ylmethoxy)benzyl]oxy}-1-phenyl-1H-pyrazole-5-carbaldehyde

생성물 1

HCID 692142863-{[3-methoxy-4-(5-methyl-2-phenyl-1,3-oxazol-4-ylmethoxy)benzyl]oxy}-1-phenyl-1H-pyrazole-5-carbonitrile수율 86%

시약·촉매·용매

1
HCID 702Ethanol용매

실험 절차

A mixture of 3-{[3-methoxy-4-(5-methyl-2-phenyl-1,3-oxazol-4-ylmethoxy)benzyl]oxy}-1-phenyl-1H-pyrazole-5-carbaldehyde (990 mg), hydroxylamine hydrochloride (200 mg), pyridine (1 mL) and ethanol (10 mL) was refluxed for 3 hrs. After concentration of the reaction mixture, dilute hydrochloric acid was added to the residue, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was dissolved in acetic anhydride (20 mL), and the mixture was refluxed for 5 hrs. After concentration of the reaction mixture, The residue was subjected to silica gel column chromatography to give 3-{[3-methoxy-4-(5-methyl-2-phenyl-1,3-oxazol-4-ylmethoxy)benzyl]oxy}-1-phenyl-1H-pyrazole-5-carbonitrile (850 mg, yield 86%) as colorless crystals from a fraction eluted with ethyl acetate-hexane (1:2, v/v). The crystals were recrystallized from tetrahydrofuran-hexane. melting point: 120-121° C.

후처리

  1. temperaturewas refluxed for 3 hrs
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe ethyl acetate layer was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated
  6. dissolutionThe residue was dissolved in acetic anhydride (20 mL)
  7. temperaturethe mixture was refluxed for 5 hrs

출처 및 근거

ORD 기록
ord-7b9df65d8a3f4189a111d4dd28e313ea
출처 데이터셋
uspto-grants-2008_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07368578B2

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