✦ LIBER ✦
ChemInform Abstract: Formation of Bromocarbenium Bromide Ion Pairs in the Electrophilic Bromination of Highly Reactive Olefins in Chlorinated Aprotic Solvents.
✍ Scribed by G. BELLUCCI; C. CHIAPPE; G. LO MORO
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 33 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0931-7597
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✦ Synopsis
Formation of Bromocarbenium Bromide Ion Pairs in the Electrophilic Bromination of Highly Reactive Olefins in Chlorinated Aprotic Solvents.
-Kinetic and product distribution data indicate that the bromination of stilbene derivatives with tetrabutylammonium tribromide proceeds via formation of bromocarbenium bromide ion pairs. In the case of the methoxystilbenes (V) the ionization of the initially formed 1:1 π-complex to a bromocarbenium bromide ion pair can compete both with the formation of a bromonium tribromide ion pair and with the nucleophilic attack by Br-. -