1,3-Dibromopropane → HCID 54342092, Verbindung
Reaktionsgleichung
[Br:1][CH2:2][CH2:3][CH2:4]Br.O1[CH2:10][CH2:9][CH2:8][CH2:7]1>>[Br:1][CH2:2][CH2:3][CH2:4][CH:7]=[CH:8][C:9]1[CH:10]=[CH:10][CH:9]=[CH:8][CH:7]=1Komponenten
3
Versuchsvorschrift
83.16 g of p-chlorostyrene was reacted with metal magnesium at 35° C. for 5 hours under stirring in tetrahydrofuran flushed with nitrogen to obtain a magnesium composite. This composite was dropwise added to a solution mixture comprising tetrahydrofuran, 1,3-dibromopropane and Li2CuCl4 at 30° C. The reaction was continued at 30° C. for two hours. Then, the obtained product was fractionated by distillation. 3-bromopropylstyrene was obtained under 0.2 Torr at 110° C., and the yield based on the starting material pchlorostyrene was 47%. Identification of 3-bromopropylstyrene was conducted by the NMR method.
Aufarbeitung
- additionThis composite was dropwise added to a solution mixture
- customat 30° C
- distillationThen, the obtained product was fractionated by distillation