Hydrochloric Acid → Benzal chloride

Reaktionsgleichung

[C:1]1([C:7](Cl)([Cl:9])[Cl:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(S)CCC.Cl>>[CH:7]([Cl:9])([Cl:8])[C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Komponenten

Edukt 3

HCID 313Hydrochloric Acid

HCID 7367Benzotrichloride

HCID 8012Butanethiol

Produkt 1

HCID 7411Benzal chlorideAusbeute 74 %

Versuchsvorschrift

19.5 g (0.1 mole) of benzotrichloride, 18 g (0.2 mole) of butanethiol and 0.2 g of copper-I bromide were heated to the reflux temperature, while stirring, and were left to react until the evolution of hydrogen chloride had ended (duration: 6 hours). The mixture was then subjected to fractional distillation to give 11.9 g (74%) of benzal chloride at a boiling point of 102°-106° C./30 mbar.