Sodium Bicarbonate → Ethyl 4-[4-chloro-2-{[6-(dimethylamino)-4-methylpyridin-3-yl]amino}-7-(1-ethylpropyl)-1H-benzimidazol-1-yl]butanoate

HRID 1398764노트

반응식

HRID 1398764 반응식
Cl[C:2]1[N:6]([CH2:7][CH2:8][CH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11])[C:5]2[C:15]([CH:20]([CH2:23][CH3:24])[CH2:21][CH3:22])=[CH:16][CH:17]=[C:18]([Cl:19])[C:4]=2[N:3]=1.[CH3:25][N:26]([CH3:35])[C:27]1[CH:32]=[C:31]([CH3:33])[C:30]([NH2:34])=[CH:29][N:28]=1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1.C(=O)(O)[O-].[Na+]>CN1CCCC1=O>[Cl:19][C:18]1[C:4]2[N:3]=[C:2]([NH:34][C:30]3[CH:29]=[N:28][C:27]([N:26]([CH3:25])[CH3:35])=[CH:32][C:31]=3[CH3:33])[N:6]([CH2:7][CH2:8][CH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11])[C:5]=2[C:15]([CH:20]([CH2:23][CH3:24])[CH2:21][CH3:22])=[CH:16][CH:17]=1

참가 물질

6

반응물 4

HCID 516892Sodium BicarbonateHCID 521998p-Toluenesulfonic acid monohydrateHCID 22136281N2,N2,4-trimethylpyridine-2,5-diamineHCID 68761768Ethyl 4-[2,4-dichloro-7-(1-ethylpropyl)-1H-benzimidazol-1-yl]butanoate

생성물 1

HCID 68772671Ethyl 4-[4-chloro-2-{[6-(dimethylamino)-4-methylpyridin-3-yl]amino}-7-(1-ethylpropyl)-1H-benzimidazol-1-yl]butanoate수율 43.1%

시약·촉매·용매 1

HCID 13387N-methyl-2-pyrrolidone용매

실험 절차

A mixture of ethyl 4-[2,4-dichloro-7-(1-ethylpropyl)-1H-benzimidazol-1-yl]butanoate (Reference Example 33; 472 mg, 1.27 mmol), N2,N2,4-trimethylpyridine-2,5-diamine (580 mg, 3.81 mmol) and p-toluenesulfonic acid monohydrate (241 mg, 1.27 mmol) in 1-methyl-2-pyrrolidinone (4 mL) was irradiated by microwave at 180° C. for 135 min. After cooling, aqueous sodium bicarbonate was added and the mixture was extracted with ethyl acetate. Organic layer was washed with water and brine, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by flash chromatography on silica gel eluting with a 20-80% ethyl acetate/n-hexane gradient mixture. The filtrate was concentrated in vacuo to give a solid, which was recrystallized from ethyl acetate/n-hexane to give the title compound (266 mg, 0.547 mmol, 43%) as a colorless solid.

후처리

  1. customwas irradiated by microwave at 180° C. for 135 min
  2. temperatureAfter cooling
  3. extractionthe mixture was extracted with ethyl acetate
  4. washOrganic layer was washed with water and brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash chromatography on silica gel eluting with a 20-80% ethyl acetate/n-hexane gradient mixture
  8. concentrationThe filtrate was concentrated in vacuo
  9. customto give a solid, which
  10. customwas recrystallized from ethyl acetate/n-hexane

출처 및 근거

ORD 기록
ord-1f97ef84a72b46c8871a38fe409bb116
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08901141B2

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