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Potassium Carbonate → 4-(benzyloxy)-6-(3,4-dimethoxyphenyl)-3-methyl-3H-imidazo[4,5-c]pyridine

HRID 2209000
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HRID 2209000 반응식
[CH2:1]([O:8][C:9]1[C:14]2[N:15]([CH3:18])[CH:16]=[N:17][C:13]=2[CH:12]=[C:11](Cl)[N:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:20]([O-:23])([O-])=O.[K+].[K+].COOB([C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1)OOC.[C:39]([O-])(O)=[O:40].[Na+]>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].CCOC(C)=O.O.CC(O)C.C1(C)C=CC=CC=1>[CH2:1]([O:8][C:9]1[C:14]2[N:15]([CH3:18])[CH:16]=[N:17][C:13]=2[CH:12]=[C:11]([C:36]2[CH:35]=[CH:34][C:33]([O:40][CH3:39])=[C:38]([O:23][CH3:20])[CH:37]=2)[N:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1
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참가 물질

10

반응물 4

HCID 11430Potassium CarbonateHCID 516892Sodium BicarbonateHCID 208206864-Benzyloxy-6-chloro-3-methyl-imidazo[4,5-c]pyridineHCID 86637092Dimethoxyphenyl boronic acid

생성물 1

HCID 1178430324-(benzyloxy)-6-(3,4-dimethoxyphenyl)-3-methyl-3H-imidazo[4,5-c]pyridine

시약·촉매·용매 5

HCID 44119782
Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)
촉매
HCID 962Water용매
HCID 1140Toluene용매
HCID 3776Isopropanol용매
HCID 8857Ethyl Acetate용매

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온도
100 °C

실험 절차

To a mixture of 4-(benzyloxy)-6-chloro-3-methyl-3H-imidazo[4,5-c]pyridine 2.25 (0.54 g, 1.97 mmol), K2CO3 (0.68 g, 4.93 mmol), Pd(dppf)Cl2 (0.07 g, 0.1 mmol), and dimethoxy phenyl boronic acid (0.65 g, 3.55 mmol) under N2 was added toluene, iPrOH, and water (2:1:1, 10 mL), and the reaction was heated to 100° C. for 5 hrs. The reaction was cooled and EtOAc (40 mL)/NaHCO3 (20 mL) were added, the layers were separated and the aqueous was extracted with EtOAc (2×25 mL). The combined organics were washed with brine (50 mL), dried (MgSO4), filtered and concentrated. The residue was purified by flash chromatography (EtOAc 0-->5% MeOH gradient) to afford 4-(benzyloxy)-6-(3,4-dimethoxyphenyl)-3-methyl-3H-imidazo[4,5-c]pyridine 2.26.

후처리

  1. temperatureThe reaction was cooled
  2. customthe layers were separated
  3. extractionthe aqueous was extracted with EtOAc (2×25 mL)
  4. washThe combined organics were washed with brine (50 mL)
  5. dry with materialdried (MgSO4)
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was purified by flash chromatography (EtOAc 0-->5% MeOH gradient)

출처 및 근거

ORD 기록
ord-30f13ea621c94cadaf261a85cfd8ad07
출처 데이터셋
uspto-grants-2016_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09376441B2

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