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Hydrochloric Acid → 8-(2,6-Dichloro-3,5-dimethoxy-phenyl)-quinoxaline-5-carboxylic acid (1H-imidazol-2-yl)-amide

HRID 2391772
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인쇄 미리보기

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HRID 2391772 반응식
C[Si](C)(C)CCOC[N:7]1[CH:11]=[CH:10][N:9]=[C:8]1[NH:12][C:13]([C:15]1[C:16]2[N:17]=[CH:18][CH:19]=[N:20][C:21]=2[C:22]([C:25]2[C:30]([Cl:31])=[C:29]([O:32][CH3:33])[CH:28]=[C:27]([O:34][CH3:35])[C:26]=2[Cl:36])=[CH:23][CH:24]=1)=[O:14].Cl.C([O-])([O-])=O.[Na+].[Na+]>CCO>[NH:9]1[CH:10]=[CH:11][N:7]=[C:8]1[NH:12][C:13]([C:15]1[C:16]2[N:17]=[CH:18][CH:19]=[N:20][C:21]=2[C:22]([C:25]2[C:26]([Cl:36])=[C:27]([O:34][CH3:35])[CH:28]=[C:29]([O:32][CH3:33])[C:30]=2[Cl:31])=[CH:23][CH:24]=1)=[O:14]
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참가 물질

5

반응물 3

HCID 313Hydrochloric AcidHCID 10340Sodium CarbonateHCID 866411408-(2,6-dichloro-3,5-dimethoxy-phenyl)-quinoxaline-5-carboxylic acid [1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazol-2-yl]-amide

생성물 1

HCID 592928538-(2,6-Dichloro-3,5-dimethoxy-phenyl)-quinoxaline-5-carboxylic acid (1H-imidazol-2-yl)-amide수율 79.1%

시약·촉매·용매 1

HCID 702
Ethanol
용매

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온도
65 °C

실험 절차

A mixture of 8-(2,6-dichloro-3,5-dimethoxy-phenyl)-quinoxaline-5-carboxylic acid [1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazol-2-yl]-amide (Step 14.1) (0.527 g, 0.82 mmol), 5 N HCl (7 mL), and EtOH (4 mL) was stirred at 65° C. for 10 h. The reaction mixture was allowed to cool to rt, basified by addition of a saturated aqueous solution of Na2CO3, and extracted with DCM. The combined organic phase was washed with H2O and brine, dried (Na2SO4), filtered and concentrated. The residue was purified by silica gel column chromatography (DCM/MeOH/NH3aq, 94:5:1) to afford 0.288 g of the title compound as a yellow solid: ESI-MS: 443.9/445.9 [M+H]+; tR=3.74 min (System 1); TLC: Rf=0.30 (DCM/MeOH/NH3aq, 94:5:1).

후처리

  1. temperatureto cool to rt
  2. extractionextracted with DCM
  3. washThe combined organic phase was washed with H2O and brine
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified by silica gel column chromatography (DCM/MeOH/NH3aq, 94:5:1)

출처 및 근거

ORD 기록
ord-6c676ff84e6948c482482d0df3952cd2
출처 데이터셋
uspto-grants-2012_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08273882B2

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