2-Chloro-5-(trifluoromethyl)pyridine → 2-(5-Trifluoromethyl-pyridin-2-yl)-benzoic acid isopropyl ester

HRID 841774

반응식

HRID 841774 반응식
[CH:1]([O:4][C:5]([C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1B(O)O)=[O:6])([CH3:3])[CH3:2].Cl[C:17]1[CH:22]=[CH:21][C:20]([C:23]([F:26])([F:25])[F:24])=[CH:19][N:18]=1>C1(C)C=CC=CC=1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:1]([O:4][C:5](=[O:6])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][C:8]=1[C:17]1[CH:22]=[CH:21][C:20]([C:23]([F:26])([F:25])[F:24])=[CH:19][N:18]=1)([CH3:3])[CH3:2]

참가 물질

5

반응물 2

HCID 923422-Chloro-5-(trifluoromethyl)pyridineHCID 53435142(2-(Isopropoxycarbonyl)phenyl)boronic acid

생성물 1

HCID 698912952-(5-Trifluoromethyl-pyridin-2-yl)-benzoic acid isopropyl ester수율 70%

시약·촉매·용매 2

HCID 178418397HCID 178418397, 화합물촉매HCID 1140Toluene용매

실험 절차

2-(Isopropylcarboxy)-phenylboronic acid (S. Caron and J. M. Hawkins, J. Org. Chem. 1998, 63, 2054-2055) (2.2 g, 10.6 mmol) and 2-chloro-5-trifluoromethylpyridine (500 mg, 2.75 mmol) were dissolved in toluene. Tetrakis(triphenylphosphine)palladium (160 mg, 0.14 mmol) was added and the reaction vessel purged by alternating vacuum and nitrogen gas three times. 8 ml of a 10% sodium carbonate solution was added and the reaction mixture was heated at reflux for 1.5 h. The resulting mixture was extracted with ethyl acetate, the combined organic layers dried (magnesium sulfate), filtered and concentrated under vacuum. Purification of the residue by column chromatography eluting with 10% ethyl acetate in hexanes provided the title compound in approximately 70% yield.

후처리

  1. customthe reaction vessel purged
  2. addition8 ml of a 10% sodium carbonate solution was added
  3. temperaturethe reaction mixture was heated
  4. temperatureat reflux for 1.5 h
  5. extractionThe resulting mixture was extracted with ethyl acetate
  6. dry with materialthe combined organic layers dried (magnesium sulfate)
  7. filtrationfiltered
  8. concentrationconcentrated under vacuum
  9. customPurification of the residue by column chromatography
  10. washeluting with 10% ethyl acetate in hexanes

출처 및 근거

ORD 기록
ord-8bb323db14634dfba0d4059e3722cebe
출처 데이터셋
uspto-grants-2002_04
특허 번호
US06369075B1

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