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Tetramethylammonium fluoride → 6-[2-(2-Chloro-5-methoxy-phenyl)-1-hydroxy-1-trifluoromethyl-propyl]-4-methyl-4H-benzo[1,4]oxazin-3-one

HRID 2096714
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HRID 2096714 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[CH:10]([CH3:25])[C:11]([C:13]1[CH:14]=[CH:15][C:16]2[O:21][CH2:20][C:19](=[O:22])[N:18]([CH3:23])[C:17]=2[CH:24]=1)=[O:12].[F:26][C:27]([Si](C)(C)C)([F:29])[F:28].[F-].C[N+](C)(C)C.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>O1CCCC1>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[CH:10]([CH3:25])[C:11]([C:13]1[CH:14]=[CH:15][C:16]2[O:21][CH2:20][C:19](=[O:22])[N:18]([CH3:23])[C:17]=2[CH:24]=1)([OH:12])[C:27]([F:29])([F:28])[F:26]
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6

반응물 4

HCID 67803Tetramethylammonium fluorideHCID 552549(Trifluoromethyl)trimethylsilaneHCID 2724141Tetrabutylammonium FluorideHCID 666972026-[2-(2-Chloro-5-methoxy-phenyl)-propionyl]-4-methyl-4H-benzo[1,4]oxazin-3-one

생성물 1

HCID 666971746-[2-(2-Chloro-5-methoxy-phenyl)-1-hydroxy-1-trifluoromethyl-propyl]-4-methyl-4H-benzo[1,4]oxazin-3-one수율 78.7%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매3회

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온도
0 °C

실험 절차

To a solution of 6-[2-(2-chloro-5-methoxy-phenyl)-propionyl]-4-methyl-4H-benzo[1,4]oxazin-3-one (1.17 g) in tetrahydrofuran (60 ml) was added a solution of (trifluoromethyl)trimethylsilane (703 mg) in tetrahydrofuran (10 ml) at 0° C. Tetramethylammonium fluoride (30 mg) was added and the mixture was stirred at 0° C. for 30 min and at room temperature for 15 min. A 1 M solution of tetrabutylammonium fluoride in tetrahydrofuran (3.26 ml) was added and the mixture was stirred for 20 min. The solvent was evaporated and the residue was dissolved in dichloromethane. The organic phase was washed with water, dried (MgSO4), filtered and concentrated. The product was purified by chromatography (SiO2, cyclohexane/EtOAc 1:0=>7:3) to give the title compound (1.1 g) as a colorless solid. MS (m/e, ISP neg. ion)=428.4 [M−H+].

후처리

  1. stirringthe mixture was stirred for 20 min
  2. customThe solvent was evaporated
  3. dissolutionthe residue was dissolved in dichloromethane
  4. washThe organic phase was washed with water
  5. dry with materialdried (MgSO4)
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe product was purified by chromatography (SiO2, cyclohexane/EtOAc 1:0=>7:3)

출처 및 근거

ORD 기록
ord-984c1d29acf548aca23e0e1bed721f9d
출처 데이터셋
uspto-grants-2013_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08450313B2

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