3-(Trifluoromethyl)phenol → 1-(4-bromobutoxy)-3-(trifluoromethyl)benzene

Reaktionsgleichung

[OH-].[Na+].[OH:3][C:4]1[CH:5]=[C:6]([C:10]([F:13])([F:12])[F:11])[CH:7]=[CH:8][CH:9]=1.[Br:14][CH2:15][CH2:16][CH2:17][CH2:18]Br>C(Cl)Cl>[F:13][C:10]([F:11])([F:12])[C:6]1[CH:5]=[C:4]([CH:9]=[CH:8][CH:7]=1)[O:3][CH2:18][CH2:17][CH2:16][CH2:15][Br:14]

Komponenten

Versuchsvorschrift

267 ml of 1.6 N sodium hydroxide solution are added dropwise with stirring at 100° C. within 90 minutes to a mixture of 69.3 g of 3-hydroxybenzotrifluoride and 119 g of 1,4-dibromobutane. The mixture is stirred at this temperature for a further 5 hours and is then allowed to cool. 200 ml of methylene chloride are added, the organic phase is separated off, washed with dilute sodium hydroxide solution, dried over sodium sulfate and concentrated. The residue is distilled in vacuo. 102.6 g of 4-(3-trifluoromethylphenoxy)butyl bromide of b.p. 143° to 144° C. (13 mm Hg=1730 Pa) are obtained.