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Sodium periodate → (4S)-7-(3,5-Dimethylisoxazol-4-yl)-4-pyridin-2-yl-4,5-dihydroimidazo[1,5,4-de][1,4]benzoxazine-2-carbaldehyde

HRID 589081
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HRID 589081 반응식
[CH3:1][C:2]1[C:6]([C:7]2[C:16]3[O:15][CH2:14][C@H:13]([C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][N:18]=4)[N:12]4[C:23]([CH:25]=C)=[N:24][C:10]([C:11]=34)=[CH:9][CH:8]=2)=[C:5]([CH3:27])[O:4][N:3]=1.I([O-])(=O)(=O)=[O:29].[Na+]>O1CCCC1.O.[Os](=O)(=O)(=O)=O>[CH3:1][C:2]1[C:6]([C:7]2[C:16]3[O:15][CH2:14][C@H:13]([C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][N:18]=4)[N:12]4[C:23]([CH:25]=[O:29])=[N:24][C:10]([C:11]=34)=[CH:9][CH:8]=2)=[C:5]([CH3:27])[O:4][N:3]=1
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참가 물질

6

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HCID 23667635Sodium periodateHCID 86299165(4S)-7-(3,5-Dimethylisoxazol-4-yl)-4-pyridin-2-yl-2-vinyl-4,5-dihydroimidazo[1,5,4-de][1,4]benzoxazine

생성물 1

HCID 90409512(4S)-7-(3,5-Dimethylisoxazol-4-yl)-4-pyridin-2-yl-4,5-dihydroimidazo[1,5,4-de][1,4]benzoxazine-2-carbaldehyde수율 147.1%

시약·촉매·용매 3

HCID 30318Osmium Tetroxide촉매
HCID 962
Water
용매
2회
HCID 8028Tetrahydrofuran용매

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온도
0 °C

실험 절차

(4S)-7-(3,5-Dimethylisoxazol-4-yl)-4-pyridin-2-yl-2-vinyl-4,5-dihydroimidazo[1,5,4-de][1,4]benzoxazine (0.05 g, 0.1 mmol) was dissolved in tetrahydrofuran (1.7 mL). The resulting solution was cooled to 0° C., then a solution of 0.16 M osmium tetraoxide in water (0.3 mL, 0.04 mmol) [Aldrich, cat. #251755] and sodium metaperiodate (140 mg, 0.66 mmol) [Aldrich, cat. #S1878] in water (0.1 mL) were added. The reaction was allowed to warm to room temperature and stirred for 1 h. The reaction was quenched with saturated aqueous sodium sulfite (10 mL) for 10 min at room temperature. The mixture was filtered through a Celite plug and the plug was rinsed with dichloromethane. The organic layer was concentrated under vacuum. The resulting residue was purified by flash chromatography elucting ethyl acetate in hexanes (75-100%, ethyl acetate containing 20% MeOH) to afford the desired product (0.053 g, 100%). LCMS for C20H17O3N4 (M+H)+: calculated m/z=361.1. found 361.2.

후처리

  1. temperatureto warm to room temperature
  2. customThe reaction was quenched with saturated aqueous sodium sulfite (10 mL) for 10 min at room temperature
  3. filtrationThe mixture was filtered through a Celite plug
  4. washthe plug was rinsed with dichloromethane
  5. concentrationThe organic layer was concentrated under vacuum
  6. customThe resulting residue was purified by flash chromatography

출처 및 근거

ORD 기록
ord-18a49d0f409f4854a0e16cc3ffb16e93
출처 데이터셋
uspto-grants-2016_01
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09227985B2

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