Potassium Carbonate → 3-Methoxy-6-methyl-2-(4-(trifluoromethyl)phenyl)pyridine

HRID 1630744

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HRID 1630744 반응식
[F:1][C:2]([F:13])([F:12])[C:3]1[CH:8]=[CH:7][C:6](B(O)O)=[CH:5][CH:4]=1.COC1C=CC=C(OC)C=1C1C=CC=CC=1P(C1CCCCC1)C1CCCCC1.C(=O)([O-])[O-].[K+].[K+].I[C:50]1[C:55]([O:56][CH3:57])=[CH:54][CH:53]=[C:52]([CH3:58])[N:51]=1>C(#N)C.CC([O-])=O.CC([O-])=O.[Pd+2].O>[CH3:57][O:56][C:55]1[C:50]([C:6]2[CH:7]=[CH:8][C:3]([C:2]([F:13])([F:12])[F:1])=[CH:4][CH:5]=2)=[N:51][C:52]([CH3:58])=[CH:53][CH:54]=1

참가 물질

8

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온도
75 °C

실험 절차

To a mixture of 4-(trifluoromethyl)phenylboronic acid (0.97 g, 5.1 mmol), S—PHOS (0.20 g, 0.47 mmol), potassium carbonate (2.0 g, 15 mmol), and Pd(OAc)2 (0.061 g, 0.27 mmol) was added a solution of 2-iodo-3-methoxy-6-methylpyridine (prepared in the previous step) in acetonitrile (6 mL) followed by water (4 mL). The reaction mixture was degassed by bubbling nitrogen through the solution for 10 min, and the reaction mixture was heated to 75° C. After 4 h, the reaction mixture was diluted with EtOAc, washed with saturated NaHCO3 (1×), brine (1×), dried over MgSO4, filtered, and concentrated. Purification by flash column chromatography on silica gel (5% to 20% EtOAc in hexanes) gave 3-methoxy-6-methyl-2-(4-(trifluoromethyl)phenyl)pyridine.

후처리

  1. customThe reaction mixture was degassed
  2. customby bubbling nitrogen through the solution for 10 min
  3. additionthe reaction mixture was diluted with EtOAc
  4. washwashed with saturated NaHCO3 (1×), brine (1×)
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customPurification by flash column chromatography on silica gel (5% to 20% EtOAc in hexanes)

출처 및 근거

ORD 기록
ord-0efef0adc9b44a178b643bef49bc58a1
출처 데이터셋
uspto-grants-2014_07
특허 번호
US08791147B2

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