Toluene → 2-Amino-6-methyl-5-(3-fluoro-5-trifluoromethylphenyl)benzonitrile

HRID 52645

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HRID 52645 반응식
[NH2:1][C:2]1[CH:9]=[CH:8][C:7](Br)=[C:6]([CH3:11])[C:3]=1[C:4]#[N:5].C(=O)([O-])[O-].[Na+].[Na+].C1(C)C=CC=CC=1.[F:25][C:26]1[CH:27]=[C:28](B(O)O)[CH:29]=[C:30]([C:32]([F:35])([F:34])[F:33])[CH:31]=1>C(O)C.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.O>[NH2:1][C:2]1[CH:9]=[CH:8][C:7]([C:28]2[CH:29]=[C:30]([C:32]([F:34])([F:33])[F:35])[CH:31]=[C:26]([F:25])[CH:27]=2)=[C:6]([CH3:11])[C:3]=1[C:4]#[N:5]

참가 물질

8

반응물 4

HCID 1140TolueneHCID 10340Sodium CarbonateHCID 27831923-Fluoro-5-(trifluoromethyl)benzeneboronic acidHCID 224657376-Amino-3-bromo-2-methylbenzonitrile

생성물 1

HCID 545688402-Amino-6-methyl-5-(3-fluoro-5-trifluoromethylphenyl)benzonitrile수율 103%

시약·촉매·용매 3

HCID 178418397HCID 178418397, 화합물촉매HCID 702Ethanol용매HCID 962Water용매

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온도
80 °C

실험 절차

Under a dry nitrogen atmosphere, 0.5 gram (0.0004 mole) of tetrakis(triphenylphosphine)palladium(0) was added to a stirred mixture of 2.8 grams (0.0132 mole) of 2-amino-5-bromo-6-methylbenzonitrile (prepared as in Step C of Example 1), 35 mL of aqueous 2M sodium carbonate and 50 mL of toluene. To this was then added dropwise a solution of 3.3 grams (0.0159 mole) of 3-fluoro-5-trifluoromethylphenylboronic acid in 10 mL of ethanol. Upon completion of addition, the reaction mixture was warmed to about 80° C., where it was stirred for seven hours. After this time the reaction mixture was poured into 200 mL of water. The mixture was then extracted with four 100 mL portions of ethyl acetate. The combined extracts were dried with magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure to a residue. The residue was subjected to column chromatography on silica gel. Elution was accomplished with methylene chloride. The product-containing fractions were combined and concentrated under reduced pressure, yielding 4.0 grams of 2-amino-6-methyl-5-(3-fluoro-5-trifluoromethylphenyl)benzonitrile, mp 96°-97° C. The NMR spectrum was consistent with the proposed structure.

후처리

  1. additionUpon completion of addition
  2. extractionThe mixture was then extracted with four 100 mL portions of ethyl acetate
  3. dry with materialThe combined extracts were dried with magnesium sulfate
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated under reduced pressure to a residue
  6. washElution
  7. concentrationconcentrated under reduced pressure

출처 및 근거

ORD 기록
ord-9483538f22d146ea827a30ec54953ed3
출처 데이터셋
uspto-grants-1997_04
특허 번호
US05616718

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