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m-Chloroperbenzoic acid → 6-((5,6-dimethoxy-1H-benzo[d]imidazol-1-yl)methyl)-2-(methylsulfinyl)benzo[d]oxazole

HRID 1847988
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HRID 1847988 반응식
[CH3:1][O:2][C:3]1[C:23]([O:24][CH3:25])=[CH:22][C:6]2[N:7]([CH2:10][C:11]3[CH:21]=[CH:20][C:14]4[N:15]=[C:16]([S:18][CH3:19])[O:17][C:13]=4[CH:12]=3)[CH:8]=[N:9][C:5]=2[CH:4]=1.ClC1C=CC=C(C(OO)=[O:34])C=1.C([O-])(O)=O.[Na+]>C(Cl)Cl>[CH3:1][O:2][C:3]1[C:23]([O:24][CH3:25])=[CH:22][C:6]2[N:7]([CH2:10][C:11]3[CH:21]=[CH:20][C:14]4[N:15]=[C:16]([S:18]([CH3:19])=[O:34])[O:17][C:13]=4[CH:12]=3)[CH:8]=[N:9][C:5]=2[CH:4]=1
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5

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HCID 70297m-Chloroperbenzoic acidHCID 516892Sodium BicarbonateHCID 866810146-((5,6-dimethoxy-1H-benzo[d]imidazol-1-yl)methyl)-2-(methylthio)benzo[d]oxazole

생성물 1

HCID 866810176-((5,6-dimethoxy-1H-benzo[d]imidazol-1-yl)methyl)-2-(methylsulfinyl)benzo[d]oxazole수율 45%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To a stirred solution of 6-((5,6-dimethoxy-1H-benzo[c]imidazol-1-yl)methyl)-2-(methylthio)benzo[d]oxazole (270 mg, 0.761 mmol) from Step 2 of Example 34 in DCM (5 mL) at 0° C. was added 70% meta-chloroperbenzoic acid (262 mg, 1.14 mmol), and the mixture was allowed to warm to rt and stirred for a further 4.5 h. To the mixture was added saturated aq NaHCO3 and the organic layer was separated. The aqueous layer was extracted with DCM and the combined organic layers were washed with saturated aq NaHCO3. The organic layer was separated, dried over MgSO4, filtered, and concentrated under reduced pressure. The residue was purified via silica gel flash chromatography eluting with 100% DCM to 10% MeOH in DCM to afford 6-((5,6-dimethoxy-1H-benzo[d]imidazol-1-yl)methyl)-2-(methylsulfinyl)benzo[d]oxazole (127 mg, 45%) as a solid. 1H NMR (300 MHz, DMSO-d6) δ 8.24 (s, 1H), 7.85-7.92 (m, 2H), 7.48 (d, J=8.3 Hz, 1H), 7.21 (s, 1H), 7.20 (s, 1H), 5.62 (s, 2H), 3.76 (s, 6H), 3.18 (s, 3H). LCMS (ESI) m/z 372 (M+H)+.

후처리

  1. customthe organic layer was separated
  2. extractionThe aqueous layer was extracted with DCM
  3. washthe combined organic layers were washed with saturated aq NaHCO3
  4. customThe organic layer was separated
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified via silica gel flash chromatography
  9. washeluting with 100% DCM to 10% MeOH in DCM

출처 및 근거

ORD 기록
ord-d3a81db82f844213b4988a1a8f00b334
출처 데이터셋
uspto-grants-2015_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08952058B2

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