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

HRID 225560

反応式

HRID 225560 の反応式
[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]

参加物

5

反応条件

温度
100 °C

実験手順

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 deglazed 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%)

後処理

  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)

出典と根拠

ORDレコード
ord-fd225e9de212402c8f10881cdeae5040
出典データセット
uspto-grants-2009_07
特許番号
US07557114B2

関連ノート

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