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Ozone → 2-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-3-(2-formyl-phenyl)-propionic acid, 2-trimethylsilanyl-ethyl ester

HRID 2713
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인쇄 미리보기

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HRID 2713 반응식
[O:1]=[C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[C:4](=[O:11])[N:3]1[CH:12]([CH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][C:24]=1[CH:29]=C)[C:13]([O:15][CH2:16][CH2:17][Si:18]([CH3:21])([CH3:20])[CH3:19])=[O:14].[O:31]=[O+][O-]>C(Cl)Cl.CO>[O:1]=[C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[C:4](=[O:11])[N:3]1[CH:12]([CH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][C:24]=1[CH:29]=[O:31])[C:13]([O:15][CH2:16][CH2:17][Si:18]([CH3:19])([CH3:21])[CH3:20])=[O:14]
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반응물 2

HCID 24823OzoneHCID 541575632-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-3-(2-vinyl-phenyl)-propionic acid, 2-trimethylsilanyl-ethyl ester

생성물 1

HCID 544841782-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-3-(2-formyl-phenyl)-propionic acid, 2-trimethylsilanyl-ethyl ester수율 100%

시약·촉매·용매 2

HCID 887Methanol용매HCID 6344
Dichloromethane
용매

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온도
-78 °C

실험 절차

Dissolve 2-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-3-(2-vinyl-phenyl)-propionic acid, 2-trimethylsilanyl-ethyl ester (2.61 g, 6.19 mmol) in methylene chloride (70 mL) and methanol (75 mL). Cool to -78° C. and treat with ozone until a blue color persists. Purge with nitrogen and add dimethylsulfide (7 mL) and pyridine (0.35 mL). Allow to warm to room temperature gradually overnight. Partition between methylene chloride (100 mL) and water (40 mL). Extract the aqueous with methylene chloride (50 mL), dry (Na2 SO4) and purify by silica gel chromatography (2.5:1 hexane/ethyl acetate) to give the title compound as a colorless viscous oil (2.65 g, 100%).

후처리

  1. customPurge with nitrogen
  2. additionadd dimethylsulfide (7 mL) and pyridine (0.35 mL)
  3. temperatureAllow to warm to room temperature gradually overnight
  4. customPartition between methylene chloride (100 mL) and water (40 mL)
  5. extractionExtract the aqueous with methylene chloride (50 mL)
  6. customdry (Na2 SO4)
  7. custompurify by silica gel chromatography (2.5:1 hexane/ethyl acetate)

출처 및 근거

ORD 기록
ord-d5c09177d7e64c599435165854334fd6
출처 데이터셋
uspto-grants-1998_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05731306

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