Bromine → 3,3-Bis-fluoromethyl-1-bromo-1-(4-chlorophenoxy)-butan-2-one
Reaktionsgleichung
[F:1][CH2:2][C:3]([CH2:16][F:17])([CH3:15])[C:4](=[O:14])[CH2:5][O:6][C:7]1[CH:12]=[CH:11][C:10]([Cl:13])=[CH:9][CH:8]=1.[Br:18]Br>C(Cl)Cl>[F:1][CH2:2][C:3]([CH2:16][F:17])([CH3:15])[C:4](=[O:14])[CH:5]([Br:18])[O:6][C:7]1[CH:12]=[CH:11][C:10]([Cl:13])=[CH:9][CH:8]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
166 g (0.632 mol) of 3,3-bisfluoromethyl-1-(4-chlorophenoxy)-butan-2-one were dissolved in 500 ml of methylene chloride, and 100 g (0.625 mol) of bromine were added dropwise at 20° to 30° C., while stirring and cooling. The mixture was subsequently stirred at 20° C. for 2 hours. After distilling off the solvent in vacuo, the residue was crystallized from petroleum ether. 190 g (88% of theory) of 3,3-bisfluoromethyl-1-bromo-1-(4-chlorophenoxy)-butan-2-one of melting point 54°-55° C. were obtained. ##STR75##