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Nitric Acid → 3-(4-Chloro-2-methyl-3-nitrobenzofuran-7-yl)-1-methyl-6-trifluoromethyluracil

HRID 366338
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HRID 366338 반응식
[Cl:1][C:2]1[C:7]2[CH:8]=[C:9]([CH3:11])[O:10][C:6]=2[C:5]([N:12]2[C:17](=[O:18])[CH:16]=[C:15]([C:19]([F:22])([F:21])[F:20])[N:14]([CH3:23])[C:13]2=[O:24])=[CH:4][CH:3]=1.[N+:25]([O-])([OH:27])=[O:26]>S(=O)(=O)(O)O>[Cl:1][C:2]1[C:7]2[C:8]([N+:25]([O-:27])=[O:26])=[C:9]([CH3:11])[O:10][C:6]=2[C:5]([N:12]2[C:17](=[O:18])[CH:16]=[C:15]([C:19]([F:22])([F:21])[F:20])[N:14]([CH3:23])[C:13]2=[O:24])=[CH:4][CH:3]=1
참가 물질반응 조건실험 절차후처리출처 및 근거반응 노트

참가 물질

4

반응물 2

HCID 944Nitric AcidHCID 232891903-(4-Chloro-2-methylbenzofuran-7-yl)-1-methyl-6-trifluoromethyluracil

생성물 1

HCID 232891773-(4-Chloro-2-methyl-3-nitrobenzofuran-7-yl)-1-methyl-6-trifluoromethyluracil수율 67.6%

시약·촉매·용매 1

HCID 1118Sulfuric Acid용매

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온도
-20 °C

실험 절차

0.5 g (1.4 mmol) of 3-(4-chloro-2-methylbenzofuran-7-yl)-1-methyl-6-trifluoromethyluracil was dissolved in 10 ml of concentrated sulfuric acid, and 0.1 g (1.1 mmol) of 60% nitric acid was dropwise added thereto at -20° C. After stirring at -20° C. for 10 minutes, the reaction solution was poured into ice water and extracted with 50 ml of chloroform. The organic layer was washed sequentially with water and a saturated sodium chloride aqueous solution and then dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure. Then, the obtained residue was purified by silica gel column chromatography to obtain 0.3 g (yield: 53.3%) of the desired product as a pale yellow crystals. Melting point: 174-175° C.

후처리

  1. customat -20° C
  2. extractionextracted with 50 ml of chloroform
  3. washThe organic layer was washed sequentially with water
  4. dry with materiala saturated sodium chloride aqueous solution and then dried over anhydrous magnesium sulfate
  5. distillationThe solvent was distilled off under reduced pressure
  6. customThen, the obtained residue was purified by silica gel column chromatography

출처 및 근거

ORD 기록
ord-b281e38e2eef4d488ca398f0ead348ac
출처 데이터셋
uspto-grants-2000_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06130187

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