Phosphorus tribromide → HCID 54251209, Verbindung
Reaktionsgleichung
[CH2:1]1[O:9][C:8]2[CH:7]=[CH:6][C:5]([CH2:10][CH2:11][CH:12]([CH:14]3[CH2:16][CH2:15]3)O)=[CH:4][C:3]=2[O:2]1.P(Br)(Br)[Br:18].[Br-].[Li+]>[Br-].[Zn+2].[Br-]>[CH2:1]1[O:9][C:8]2[CH:7]=[CH:6][C:5]([CH2:10][CH2:11][CH:12]=[CH:14][CH2:15][CH2:16][Br:18])=[CH:4][C:3]=2[O:2]1Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
[V; Ar is 3,4-methylenedioxyphenyl, R is H] was prepared from 11.5 g. of 2-(3,4-methylenedioxyphenyl)ethyl cyclopropyl carbinol (Preparation B2), 12 g. of phosphorus tribromide, 10 g. of lithium bromide and 12.7 g. of zinc bromide according to the procedure given above in Preparation C1, affording 12.5 g. of product as an oil.