Cesium carbonate → 1-[3-Chloro-5-(trifluoromethyl)phenyl]pyrrolidin-3-ol

HRID 2198053노트

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HRID 2198053 반응식
Br[C:2]1[CH:7]=[C:6]([C:8]([F:11])([F:10])[F:9])[CH:5]=[C:4]([Cl:12])[CH:3]=1.[OH:13][CH:14]1[CH2:18][CH2:17][NH:16][CH2:15]1.C1(P(C2C=CC=CC=2)C2C=CC3C(=CC=CC=3)C=2C2C3C(=CC=CC=3)C=CC=2P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>C1(C)C=CC=CC=1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.O>[Cl:12][C:4]1[CH:3]=[C:2]([N:16]2[CH2:17][CH2:18][CH:14]([OH:13])[CH2:15]2)[CH:7]=[C:6]([C:8]([F:11])([F:10])[F:9])[CH:5]=1

참가 물질

8

반응물 4

HCID 10796Cesium carbonateHCID 982104-HydroxypyrrolidineHCID 634876Binap, (A+-)-HCID 202698551-Bromo-3-chloro-5-(trifluoromethyl)benzene

생성물 1

HCID 670222091-[3-Chloro-5-(trifluoromethyl)phenyl]pyrrolidin-3-ol수율 80.3%

시약·촉매·용매 3

HCID 167845palladium(II) acetate촉매HCID 962Water용매HCID 1140Toluene용매

실험 절차

A solution of 1-bromo-3-chloro-5-(trifluoromethyl)benzene (5.0 g), 3-hydroxypyrrolidine (1.85 g), palladium(II) acetate (217 mg), (±)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (1.2 g) and cesium carbonate (18.8 g) in toluene (96 mL) was stirred under an argon gas atmosphere at 85° C. for 16 hr. After cooling to room temperature, water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated, and the residue was purified by silica gel column chromatography (hexane/ethyl acetate 80:20-10:90) to give the title compound (4.11 g, yield 80%) as a brown oil.

후처리

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated
  6. customthe residue was purified by silica gel column chromatography (hexane/ethyl acetate 80:20-10:90)

출처 및 근거

ORD 기록
ord-b36106639f6a4de0b414f5e6b2335ad4
출처 데이터셋
uspto-grants-2012_12
특허 번호
US08338622B2

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