Methanol → 4,6-Dimethoxy-1(2H)-isoquinolinone

HRID 1852276노트

반응식

HRID 1852276 반응식
F[C:2]1[CH:11]=[C:10]2[C:5]([CH:6]=[CH:7][NH:8][C:9]2=[O:12])=[CH:4][C:3]=1[O:13][CH3:14].CS(O)(=O)=O.[CH3:20][OH:21]>>[CH3:20][O:21][C:6]1[C:5]2[C:10](=[CH:11][CH:2]=[C:3]([O:13][CH3:14])[CH:4]=2)[C:9](=[O:12])[NH:8][CH:7]=1

참가 물질

4

반응물 3

HCID 887MethanolHCID 6395Methanesulfonic AcidHCID 218898267-FLUORO-6-METHOXYISOQUINOLIN-1(2H)-ONE

생성물 1

HCID 222502544,6-Dimethoxy-1(2H)-isoquinolinone수율 48.8%

실험 절차

To a solution of 7-fluoro-6-methoxyisoquinolin-1(2H)-one (7 g, 40.0 mmol) in methanol (70 ml) was added iodozobenzenediacetate (14.16 g, 40.0 mmol) followed by methane sulphonic acid (11.52 g, 120 mmol) at room temperature. The reaction mass was heated at reflux for 3 h. The solvent was evaporated and the residue was diluted with cold water. The precipitated solid was filtered, washed with water to get crude compound (4 g, 48.8%) as a light red colored solid. 1H NMR (400 MHz, DMSO): δ ppm 8.11-8.09 (d, J=8 Hz, 1H), 7.19 (s, 1H), 7.13-7.11 (d, J=8 Hz, 1H), 6.72-6.71 (d, J=12 Hz, 1H), 3.89 (s, 3H), 3.79 (s, 3H); MS: MS m/z 206.1 (M++1).

후처리

  1. temperatureThe reaction mass was heated
  2. temperatureat reflux for 3 h
  3. customThe solvent was evaporated
  4. additionthe residue was diluted with cold water
  5. filtrationThe precipitated solid was filtered
  6. washwashed with water

출처 및 근거

ORD 기록
ord-3b1ecfa1e8734e2895854e0b4f2990bd
출처 데이터셋
uspto-grants-2015_02
특허 번호
US08957203B2

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