4-Phenoxyphenol → 2-Fluoro-4-phenoxyphenol
Reaktionsgleichung
[O:1]([C:8]1[CH:13]=[CH:12][C:11]([OH:14])=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[O-]S(C(F)(F)[F:20])(=O)=O.ClC1C=[N+](F)C=C(Cl)C=1>ClCCl>[F:20][C:10]1[CH:9]=[C:8]([O:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[CH:13]=[CH:12][C:11]=1[OH:14]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a 250 ml dichloromethane solution of 4-phenoxyphenol (2 g, 10.7 mmol) was added 3,5-dichloro-1-fluoro-pyridinium triflate (4.14 g, 13.1 mmol). After heating to reflux for 1 hr, the solvent was removed, the crude product was diluted with AcOEt and sat. bicarb. solution. The organic layer was separated, dried over anhydrous Na2SO4, filtered, concentrated, and chromatographed on silica gel. Elution with 10% methy t-butyl ether/hexanes gave 312 mg of the title compound as a pale yellow oil.