Isobutyl iodide → (3R)-3-ethyl-6-fluoro-4-(4-methoxybenzoyl)-1-isobutyl-3,4-dihydroquinoxalin-2(1H)-one

HRID 898240노트

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HRID 898240 반응식
[CH2:1]([C@H:3]1[N:12]([C:13](=[O:22])[C:14]2[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[CH:16][CH:15]=2)[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([F:23])[CH:10]=2)[NH:5][C:4]1=[O:24])[CH3:2].C(=O)([O-])[O-].[Cs+].[Cs+].C(=O)([O-])[O-].[K+].[K+].I[CH2:38][CH:39]([CH3:41])[CH3:40]>C(#N)C>[CH2:1]([C@H:3]1[N:12]([C:13](=[O:22])[C:14]2[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[CH:16][CH:15]=2)[C:11]2[C:6](=[CH:7][CH:8]=[C:9]([F:23])[CH:10]=2)[N:5]([CH2:38][CH:39]([CH3:41])[CH3:40])[C:4]1=[O:24])[CH3:2]

참가 물질

6

반응물 4

HCID 10556Isobutyl iodideHCID 10796Cesium carbonateHCID 11430Potassium CarbonateHCID 69223657(3R)-3-ethyl-6-fluoro-4-(4-methoxybenzoyl)-3,4-dihydroquinoxalin-2(1H)-one

생성물 1

HCID 69223598(3R)-3-ethyl-6-fluoro-4-(4-methoxybenzoyl)-1-isobutyl-3,4-dihydroquinoxalin-2(1H)-one수율 35%

시약·촉매·용매 1

HCID 6342Acetonitrile용매

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온도
74 °C

실험 절차

To a stirred solution of (3R)-3-ethyl-6-fluoro-4-(4-methoxybenzoyl)-3,4-dihydroquinoxalin-2(1H)-one (see Example 8) (0.25 g, 0.76 mmol) in acetonitrile (6 mL) under nitrogen was added cesium carbonate (0.13 g, 0.40 mmol), potassium carbonate (0.055 g, 0.40 mmol) and 1-iodo-2-methylpropane (0.30 mL, 0.48 g, 2.6 mmol). The mixture was stirred at 74° C. for 12 h. The solvent was then evaporated, and the residue was partitioned between methylene chloride and water. The organic layer was separated, washed with water, dried over magnesium sulfate, and concentrated in vacuo. The product was purified via Biotage Horizon® (SiO2, gradient from 4% EtOAc/hexane to 38% EtOAc/hexane) to yield 0.10 g (35%) of (3R)-3-ethyl-6-fluoro-4-(4-methoxybenzoyl)-1-isobutyl-3,4-dihydroquinoxalin-2(1H)-one.

후처리

  1. customThe solvent was then evaporated
  2. customthe residue was partitioned between methylene chloride and water
  3. customThe organic layer was separated
  4. washwashed with water
  5. dry with materialdried over magnesium sulfate
  6. concentrationconcentrated in vacuo
  7. customThe product was purified via Biotage Horizon® (SiO2, gradient from 4% EtOAc/hexane to 38% EtOAc/hexane)

출처 및 근거

ORD 기록
ord-2483fd9fc51e49288c66c4fbe821b533
출처 데이터셋
uspto-grants-2008_04
특허 번호
US07351709B2

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