Potassium Fluoride → 5-(2-Methyl-pyridin-4-yl)-1,3-dihydro-isoindole-2-carboxylic acid tert-butyl ester

HRID 1930836

반응식

HRID 1930836 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:16][C:15]2[C:10](=[CH:11][CH:12]=[C:13](B3OC(C)(C)C(C)(C)O3)[CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[F-].[K+].Cl[C:29]1[CH:34]=[CH:33][N:32]=[C:31]([CH3:35])[CH:30]=1>O1CCOCC1>[C:1]([O:5][C:6]([N:8]1[CH2:16][C:15]2[C:10](=[CH:11][CH:12]=[C:13]([C:29]3[CH:34]=[CH:33][N:32]=[C:31]([CH3:35])[CH:30]=3)[CH:14]=2)[CH2:9]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

참가 물질

5

반응 조건

온도
100 °C

실험 절차

A mixture containing 1.4 mmol 5-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1,3-dihydro-isoindole-2-carboxylic acid tert-butyl ester, 4.8 mmol potassium fluoride, 1.4 mmol 4-chloro-2-picoline (commercial) and 0.03 mmol bis(tri-tert.-butylphosphine)palladium in 5 ml degazed dioxane was stirred at 100° C. for 1.5 hours. The solvent was removed in vacuo. The residue was taken in ethyl acetate. The mixture was washed twice with water. The aqueous layer was extracted once with ethyl acetate. The combined organic layers were dried over Na2SO4, filtered and the solvent was removed in vacuo. The crude oil was purified on a 20 g Flashpack cartridge (Eluent: Heptane/AcOEt) to afford the title compound as a yellow oil (69% yield). MS (m/e): 311.2 ([M+H]+, 100%)

후처리

  1. customThe solvent was removed in vacuo
  2. washThe mixture was washed twice with water
  3. extractionThe aqueous layer was extracted once with ethyl acetate
  4. dry with materialThe combined organic layers were dried over Na2SO4
  5. filtrationfiltered
  6. customthe solvent was removed in vacuo
  7. customThe crude oil was purified on a 20 g Flashpack cartridge (Eluent: Heptane/AcOEt)

출처 및 근거

ORD 기록
ord-7aa24fe4b5c34424b01488537a0cae15
출처 데이터셋
uspto-grants-2012_05
특허 번호
US08188139B2

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