p-Toluenesulfonic acid → Ethyl (3,4,6-Trifluoro-2-methylbenzoyl)acetate

HRID 1275

반응식

HRID 1275 반응식
[CH3:1][C:2]1[C:20]([F:21])=[C:19]([F:22])[CH:18]=[C:17]([F:23])[C:3]=1[C:4]([CH:6](C(OCC)=O)[C:7]([O:9][CH2:10][CH3:11])=[O:8])=[O:5].C1(C)C=CC(S(O)(=O)=O)=CC=1>O>[CH3:1][C:2]1[C:20]([F:21])=[C:19]([F:22])[CH:18]=[C:17]([F:23])[C:3]=1[C:4]([CH2:6][C:7]([O:9][CH2:10][CH3:11])=[O:8])=[O:5]

참가 물질

4

반응물 2

HCID 6101p-Toluenesulfonic acidHCID 17879412Diethyl 2-methyl-3,4,6-trifluorobenzoylmalonate

생성물 1

HCID 14517129Ethyl (3,4,6-Trifluoro-2-methylbenzoyl)acetate수율 82.6%

시약·촉매·용매 1

HCID 962Water용매

실험 절차

To diethyl 2-methyl-3,4,6-trifluorobenzoylmalonate (5.1 g) are added water (20 ml) and p-toluenesulfonic acid (30 mg) and the mixture is refluxed for 2.5 hours. After cooling, the resultant is extracted with diethyl ether, and the extract is dried over magnesium sulfate and concentrated to give ethyl 2-methyl-3,4,6-trifluorobenzoylacetate (3.3 g).

후처리

  1. temperaturethe mixture is refluxed for 2.5 hours
  2. temperatureAfter cooling
  3. extractionthe resultant is extracted with diethyl ether
  4. dry with materialthe extract is dried over magnesium sulfate
  5. concentrationconcentrated

출처 및 근거

ORD 기록
ord-2da68ab0871c4a05aa3d4f9224f8df1c
출처 데이터셋
uspto-grants-1998_03
특허 번호
US05723648

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