Hydrochloric Acid → 1-[9-Chloro-1-(2,4,6-trichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-6-yl]-2,2,2-trifluoroethanol

HRID 1399278노트

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HRID 1399278 반응식
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH:24]=[O:25])=[C:6]2[C:10]=1[N:9]=[C:8]1[N:11]([C:15]3[C:20]([Cl:21])=[CH:19][C:18]([Cl:22])=[CH:17][C:16]=3[Cl:23])[CH2:12][CH2:13][CH2:14][N:7]21.C[Si](C)(C)[C:28]([F:31])([F:30])[F:29].[F-].C([N+](CCCC)(CCCC)CCCC)CCC.Cl>O1CCCC1>[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:15]4[C:20]([Cl:21])=[CH:19][C:18]([Cl:22])=[CH:17][C:16]=4[Cl:23])[CH2:12][CH2:13][CH2:14][N:7]3[C:6]=2[C:5]([CH:24]([OH:25])[C:28]([F:31])([F:30])[F:29])=[CH:4][CH:3]=1

참가 물질

6

반응물 4

HCID 313Hydrochloric AcidHCID 552549(Trifluoromethyl)trimethylsilaneHCID 2724141Tetrabutylammonium FluorideHCID 577858019-Chloro-1-(2,4,6-trichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carbaldehyde

생성물 1

HCID 577861781-[9-Chloro-1-(2,4,6-trichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-6-yl]-2,2,2-trifluoroethanol수율 44%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

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온도
0 °C

실험 절차

To a solution of 9-chloro-1-(2,4,6-trichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carbaldehyde (640 mg, 1.54 mmol) in tetrahydrofuran (8 mL) was added trimethyl(trifluoromethyl)silane (0.683 mL, 4.62 mmol) and tetrabutylammonium fluoride (1.0 M solution in tetrahydrofuran, 0.308 mL, 0.308 mmol) at 0° C. After the mixture was stirred at 0° C. for 30 min and at room temperature for 1 h, to the mixture was added 1N hydrochloric acid (2 mL) at 0° C., and the reaction mixture was stirred at room temperature for 30 min. The mixture was quenched with aqueous saturated sodium hydrogen carbonate and extracted with ethyl acetate. The combined organic layer was washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel eluting with a 20-70% ethyl acetate/n-hexane gradient mixture to give the title compound as a colorless solid (329 mg, 0.678 mmol, 44%).

후처리

  1. stirringthe reaction mixture was stirred at room temperature for 30 min
  2. customThe mixture was quenched with aqueous saturated sodium hydrogen carbonate
  3. extractionextracted with ethyl acetate
  4. washThe combined organic layer was washed with brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe residue was purified by flash column chromatography on silica gel eluting with a 20-70% ethyl acetate/n-hexane gradient mixture

출처 및 근거

ORD 기록
ord-73ebaf9dcda6491db68a57910547f625
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08901141B2

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