Reaktion #6686

Reaktionsgleichung

Sodium hydride

4-(2,3-difluorophenoxy)-butan-1-ol

4-(2,3-Difluorophenoxy)-butan-1-ol

1-bromopentane

→

1,2-difluoro-3-(4-pentyloxybutoxy)-benzene

1,2-Difluoro-3-(4-pentyloxybutoxy)benzene

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigequenched with water
2. 2
   Extraktionextracted with ethyl acetate:hexane (1:1)
3. 3
   Waschenwashed with brine
4. 4
   Trocknendried over MgSO4
5. 5
   Einengenconcentrated in vacuo
6. 6
   SonstigePurification by chromatography
7. 7
   Sonstigeon silica gel (5% EtOAc/hexanes) and recrystallization from acetonitrile

Vorschrift

Sodium hydride (1 equi.) was added to the solution of 4-(2,3-difluorophenoxy)-butan-1-ol (22), (1 equi.) and 1-bromopentane (1 equi.) in DMF (1 mL/mmole) and the reaction mixture was stirred at room temperature for 12 h,. quenched with water, extracted with ethyl acetate:hexane (1:1), washed with brine, dried over MgSO4, and concentrated in vacuo. Purification by chromatography on silica gel (5% EtOAc/hexanes) and recrystallization from acetonitrile gave 1,2-difluoro-3-(4-pentyloxybutoxy)-benzene (24), as a white solid (84%).

Quelle