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

HRID 1399041노트

반응식

HRID 1399041 반응식
CS(Cl)(=O)=O.[Cl:6][C:7]1[C:15]2[N:14]=[C:13]([NH:16][C:17]3[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][C:18]=3[Cl:24])[N:12]([CH2:25][CH2:26][CH2:27]O)[C:11]=2[C:10]([C:29]([O:31][CH3:32])=[O:30])=[CH:9][CH:8]=1.S([O-])(=O)(=O)C.C(=O)([O-])[O-].[K+].[K+]>O1CCCC1.C(=O)([O-])O.[Na+].CN(C)C=O.C(N(CC)CC)C.N1C=CC=CC=1>[Cl:6][C:7]1[CH:8]=[CH:9][C:10]([C:29]([O:31][CH3:32])=[O:30])=[C:11]2[C:15]=1[N:14]=[C:13]1[N:16]([C:17]3[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][C:18]=3[Cl:24])[CH2:27][CH2:26][CH2:25][N:12]21

참가 물질

10

반응물 4

HCID 11430Potassium CarbonateHCID 31297Methanesulfonyl chlorideHCID 85257MethanesulfonateHCID 68762786Methyl 4-chloro-2-[(2,4-dichlorophenyl)amino]-1-(3-hydroxypropyl)-1H-benzimidazole-7-carboxylate

생성물 1

HCID 57785909Methyl 9-chloro-1-(2,4-dichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carboxylate수율 87.4%

시약·촉매·용매 5

HCID 1049Pyridine용매HCID 6228Dimethylformamide용매HCID 8028Tetrahydrofuran용매HCID 8471Triethylamine용매HCID 516892Sodium Bicarbonate용매2회

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온도
0 °C

실험 절차

Methanesulfonyl chloride (11.3 mL, 143 mmol) was added to a stirred solution of methyl 4-chloro-2-[(2,4-dichlorophenyl)amino]-1-(3-hydroxypropyl)-1H-benzimidazole-7-carboxylate (Reference example 117, 15.3 g, 35.7 mmol), pyridine (50 mL) and triethylamine (25 mL) in tetrahydrofuran (100 mL) at 0° C. The mixture was stirred at 0° C. for 13 hr, and 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. A mixture of the resulting mesylate and potassium carbonate (14.7 g, 106 mmol) in N,N-dimethylformamide (60 mL) was stirred at 70° 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 (12.8 g, 31.2 mmol, 87% in 2 steps).

후처리

  1. extractionextracted with ethyl acetate
  2. washThe combined organic layer was washed with brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. stirringwas stirred at 70° C. for 4 hr
  7. extractionextracted with ethyl acetate
  8. washThe combined organic layer was washed with brine
  9. dry with materialdried over anhydrous magnesium sulfate
  10. filtrationfiltered
  11. concentrationconcentrated in vacuo
  12. washThe residue was washed with diisopropyl ether

출처 및 근거

ORD 기록
ord-b5517586e9c64fe795c809532eb48dbd
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08901141B2

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