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Trifluoroacetic acid → ethyl(3-(4-hydroxy-3-methoxybenzyl)-6-(1-methyl-1H-pyrazol-4-yl)-3H-imidazo[4,5-b]pyridin-2-yl)carbamate

HRID 2178367
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HRID 2178367 반응식
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:28]=[CH:29][C:30]=1[O:31]CC1C=CC(OC)=CC=1)[CH2:6][N:7]1[C:11]2=[N:12][CH:13]=[C:14]([C:16]3[CH:17]=[N:18][N:19]([CH3:21])[CH:20]=3)[CH:15]=[C:10]2[N:9]=[C:8]1[NH:22][C:23](=[O:27])[O:24][CH2:25][CH3:26].FC(F)(F)C(O)=O.C(=O)([O-])[O-].[K+].[K+]>ClCCl>[OH:31][C:30]1[CH:29]=[CH:28][C:5]([CH2:6][N:7]2[C:11]3=[N:12][CH:13]=[C:14]([C:16]4[CH:17]=[N:18][N:19]([CH3:21])[CH:20]=4)[CH:15]=[C:10]3[N:9]=[C:8]2[NH:22][C:23](=[O:27])[O:24][CH2:25][CH3:26])=[CH:4][C:3]=1[O:2][CH3:1]
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참가 물질

5

반응물 3

HCID 6422Trifluoroacetic acidHCID 11430Potassium CarbonateHCID 131733014ethyl (3-(3-methoxy-4-((4-methoxybenzyl)oxy)benzyl)-6-(1-methyl-1H-pyrazol-4-yl)-3H-imidazo[4,5-b]pyridin-2-yl)carbamate

생성물 1

HCID 131733015ethyl(3-(4-hydroxy-3-methoxybenzyl)-6-(1-methyl-1H-pyrazol-4-yl)-3H-imidazo[4,5-b]pyridin-2-yl)carbamate수율 93%

시약·촉매·용매 1

HCID 6344
Dichloromethane
용매

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온도
0 °C

실험 절차

To a stirred solution of ethyl (3-(3-methoxy-4-((4-methoxybenzyl)oxy)benzyl)-6-(1-methyl-1H-pyrazol-4-yl)-3H-imidazo[4,5-b]pyridin-2-yl)carbamate (2.50 g, 4.61 mmol) in dichloromethane (100 mL) at 0° C. was added trifluoroacetic acid (4.47 g, 3.0 mL, 39.18 mmol). The resulting mixture was allowed to stir at 0° C. After 2 h, the mixture was treated with 2M potassium carbonate solution to adjust the pH to ˜9. The basic mixture was extracted with 1:1 methanol/dichloromethane solution (2×50 mL). The combined organic phases were washed with brine (2×50 mL), dried over sodium sulfate, filtered, and concentrated to provide 1.80 g (93%) of ethyl (3-(4-hydroxy-3-methoxybenzyl)-6-(1-methyl-1H-pyrazol-4-yl)-3H-imidazo[4,5-b]pyridin-2-yl)carbamate as a white solid.

후처리

  1. extractionThe basic mixture was extracted with 1:1 methanol/dichloromethane solution (2×50 mL)
  2. washThe combined organic phases were washed with brine (2×50 mL)
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated

출처 및 근거

ORD 기록
ord-8b0953864f624d429df9ef9a17c8c062
출처 데이터셋
uspto-grants-2015_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09067914B1

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