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Methyl iodide → 7-(5-Chloro-2-methoxyphenyl)-8-hydroxymethyl-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one

HRID 1038478
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HRID 1038478 반응식
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([OH:24])=[C:6]([C:8]2[C:17]([CH2:18][OH:19])=[C:16]3[C:11]([NH:12][C:13]([CH3:23])([CH3:22])[C:14](=[O:21])[N:15]3[CH3:20])=[CH:10][CH:9]=2)[CH:7]=1.CI.[C:27](=O)([O-])[O-].[K+].[K+].C(OCC)(=O)C>CN(C)C=O.O.C(OCC)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:24][CH3:27])=[C:6]([C:8]2[C:17]([CH2:18][OH:19])=[C:16]3[C:11]([NH:12][C:13]([CH3:22])([CH3:23])[C:14](=[O:21])[N:15]3[CH3:20])=[CH:10][CH:9]=2)[CH:7]=1
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참가 물질

8

반응물 4

HCID 6328Methyl iodideHCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 247808507-(5-Chloro-2-hydroxyphenyl)-8-hydroxymethyl-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one

생성물 1

HCID 576717857-(5-Chloro-2-methoxyphenyl)-8-hydroxymethyl-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one수율 96.1%

시약·촉매·용매 3

HCID 962Water용매
HCID 3283Diethyl Ether용매
HCID 6228Dimethylformamide용매

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온도
50 °C

실험 절차

A mixture of 7-(5-chloro-2-hydroxyphenyl)-8-hydroxymethyl-1,3,3-trimethyl-3,4-dihydro-1H-quinoxalin-2-one (Reference Compound No. 12-1, 1.36 g, 3.92 mmol), methyl iodide (244 μL, 3.92 mmol), and potassium carbonate (1.08 g, 7.81 mmol) was suspended in anhydrous N,N-dimethylformamide (20 mL) and stirred at 50° C. for 1 hour. After cooling down, ethyl acetate (70 mL), diethylether (70 mL), and water (150 mL) were added and partitioned. The organic layer was washed with water (100 mL) and saturated brine (50 mL) successively, dried over anhydrous magnesium sulfate, and then the solvent was removed under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled reference compound (1.36 g) as a pale yellow amorphous product. (Yield 96%)

후처리

  1. temperatureAfter cooling down
  2. custompartitioned
  3. washThe organic layer was washed with water (100 mL) and saturated brine (50 mL) successively
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customthe solvent was removed under reduced pressure
  6. customThe obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate)

출처 및 근거

ORD 기록
ord-7fbbe91bc6874ab680f36f08b3642642
출처 데이터셋
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08551991B2

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