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3-Bromo-1,1,1-trifluoro-2-propanone → 2-(4-chlorophenyl)-4-hydroxy-1-[4-(methylsulfonyl)phenyl]-4-(trifluoromethyl)-4,5-dihydro-1H-imidazole

HRID 52295
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HRID 52295 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8](=[NH:20])[NH:9][C:10]2[CH:15]=[CH:14][C:13]([S:16]([CH3:19])(=[O:18])=[O:17])=[CH:12][CH:11]=2)=[CH:4][CH:3]=1.C(=O)(O)[O-].[Na+].Br[CH2:27][C:28](=[O:33])[C:29]([F:32])([F:31])[F:30]>C(O)(C)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[N:9]([C:10]3[CH:15]=[CH:14][C:13]([S:16]([CH3:19])(=[O:17])=[O:18])=[CH:12][CH:11]=3)[CH2:27][C:28]([OH:33])([C:29]([F:32])([F:31])[F:30])[N:20]=2)=[CH:6][CH:7]=1
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참가 물질

5

반응물 3

HCID 790083-Bromo-1,1,1-trifluoro-2-propanoneHCID 516892Sodium BicarbonateHCID 1785047964-chloro-N-[4-(methylsulfonyl)phenyl]benzenecarboximidamide

생성물 1

HCID 105740772-(4-chlorophenyl)-4-hydroxy-1-[4-(methylsulfonyl)phenyl]-4-(trifluoromethyl)-4,5-dihydro-1H-imidazole수율 62%

시약·촉매·용매 1

HCID 3776Isopropanol
용매

실험 절차

To a mixture of 4-chloro-N-[4-(methylsulfonyl)phenyl]benzenecarboximidamide from Step 1 (8 g, 26 mmol) and sodium bicarbonate (4.36 g, 52 mmol) in isopropanol (240 mL), 3-bromo-1,1,1-trifluoroacetone (5.4 mL, 52 mmol) was added. After heating the reaction mixture at 75°-80° C. for 24 hours, the solvent was removed. The residue was redissolved in methylene chloride and washed with water. The organic fractions were combined, dried over sodium sulfate, filtered and concentrated in vacuo. The crude product (16.2 g) was chromatographed (silica gel, hexane/ethyl acetate, 55/45) to give pure 2-(4-chlorophenyl)-4-hydroxy-1-[4-(methylsulfonyl)phenyl]-4-(trifluoromethyl)-4,5-dihydro-1H-imidazole (6.7 g, 62%) as a white solid: Anal. Calc'd. for C17H14N2SO3ClF3 : C, 48.75, H, 3.37, N, 6.69. Found: C, 48.56, H, 3.22, N, 6.51.

후처리

  1. additionwas added
  2. temperatureAfter heating the reaction mixture at 75°-80° C. for 24 hours
  3. customthe solvent was removed
  4. dissolutionThe residue was redissolved in methylene chloride
  5. washwashed with water
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customThe crude product (16.2 g) was chromatographed (silica gel, hexane/ethyl acetate, 55/45)

출처 및 근거

ORD 기록
ord-6be9f236d5054e0cbc96064725b57e63
출처 데이터셋
uspto-grants-1997_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05616601

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