[Si]([O:8][CH2:9][CH2:10][C:11]1[CH:16]=[CH:15][N:14]=[C:13]([C:17]#[N:18])[CH:12]=1)(C(C)(C)C)(C)C.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>O.C(OCC)(=O)C>[C:17]([C:13]1[CH:12]=[C:11]([CH2:10][CH2:9][OH:8])[CH:16]=[CH:15][N:14]=1)#[N:18]4-[2-(tert-Butyldimethylsilyloxy)ethyl]-2-cyanopyridine (12.8 g, 48.8 mmol) and a solution of tetrabutylammonium fluoride (1 M in THF, 73 mL, 73 mmol) were charged to a round bottom flask and stirred at room temperature overnight. The mixture was diluted with water and ethyl acetate. The layers were separated and the water layer extracted with ethyl acetate. The organic layers were combined, washed with water and brine, dried (Na2SO4), filtered and concentrated. The residue was purified by chromatography (SiO2, 50:1 CH2Cl2: methanol) to provide 2-cyano-4-(2-hydroxyethyl)pyridine (4.4 g, 61%) as an off white solid.
Wird geladen…
