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Potassium Carbonate → Methyl 9-chloro-1-[6-(dimethylamino)-4-methylpyridin-3-yl]-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carboxylate

HRID 1628728
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HRID 1628728 반응식
CS(Cl)(=O)=O.[Cl:6][C:7]1[C:15]2[N:14]=[C:13]([NH:16][C:17]3[CH:18]=[N:19][C:20]([N:24]([CH3:26])[CH3:25])=[CH:21][C:22]=3[CH3:23])[N:12]([CH2:27][CH2:28][CH2:29]O)[C:11]=2[C:10]([C:31]([O:33][CH3:34])=[O:32])=[CH:9][CH:8]=1.S([O-])(=O)(=O)C.C(=O)([O-])[O-].[K+].[K+]>O1CCCC1.CN(C)C=O.C(=O)([O-])O.[Na+].C(N(CC)CC)C>[Cl:6][C:7]1[CH:8]=[CH:9][C:10]([C:31]([O:33][CH3:34])=[O:32])=[C:11]2[C:15]=1[N:14]=[C:13]1[N:16]([C:17]3[CH:18]=[N:19][C:20]([N:24]([CH3:26])[CH3:25])=[CH:21][C:22]=3[CH3:23])[CH2:29][CH2:28][CH2:27][N:12]21
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참가 물질

9

반응물 4

HCID 11430Potassium CarbonateHCID 31297Methanesulfonyl chlorideHCID 85257MethanesulfonateHCID 68765749methyl 4-chloro-2-{[6-(dimethylamino)-4-methylpyridin-3-yl]amino}-1-(3-hydroxypropyl)-1H-benzimidazole-7-carboxylate

생성물 1

HCID 57786377Methyl 9-chloro-1-[6-(dimethylamino)-4-methylpyridin-3-yl]-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carboxylate
수율 58%

시약·촉매·용매 4

HCID 6228Dimethylformamide용매HCID 8028Tetrahydrofuran용매HCID 8471Triethylamine용매HCID 516892Sodium Bicarbonate용매

실험 절차

Methanesulfonyl chloride (1.7 mL, 21.0 mmol) was added to a stirred solution of methyl 4-chloro-2-{[6-(dimethylamino)-4-methylpyridin-3-yl]amino}-1-(3-hydroxypropyl)-1H-benzimidazole-7-carboxylate (Reference example 119, 2.20 g, 5.26 mmol) and triethylamine (3.7 mL) in tetrahydrofuran (26 mL) at 0° C. The mixture was stirred at room temperature for 13 hr, and concentrated in vacuo. A mixture of the resulting mesylate, potassium carbonate (2.18 g, 15.8 mmol) in N,N-dimethylformamide (30 mL) was stirred at 80° C. for 4 hr. The mixture was diluted with aqueous sodium hydrogen carbonate, and extracted with ethyl acetate. The combined organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo. The residue was washed with diisopropyl ether to give the title compound as a colorless powder (1.22 g, 3.05 mmol, 58% in 2 steps).

후처리

  1. concentrationconcentrated in vacuo
  2. stirringwas stirred at 80° C. for 4 hr
  3. extractionextracted with ethyl acetate
  4. washThe combined organic layer was washed with brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. washThe residue was washed with diisopropyl ether

출처 및 근거

ORD 기록
ord-3c8044ebae65464a8b13c5e001476e9e
출처 데이터셋
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08785460B2

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