What Are the Products of Brominating trans- and cis-1,2-Diphenylethene?

Thread starter morgan8222
Start date Mar 15, 2012
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Alkene

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The reaction of Br2 with trans-1,2-diphenylethene and cis-1,2-diphenylethene results in the formation of dibrominated products. For trans-1,2-diphenylethene, the addition of bromine across the double bond yields two distinct isomers due to the different spatial arrangements of the bromine atoms. Similarly, the reaction with cis-1,2-diphenylethene also produces two isomers, but the configurations differ from those obtained from the trans isomer. Overall, each starting material leads to two products, resulting in a total of four unique dibrominated isomers from the two reactions. The mechanism of this halogen addition reaction involves the formation of a bromonium ion intermediate, which is crucial for understanding the stereochemical outcomes of the products.

Mar 15, 2012

morgan8222

I am asked for the "actual products" of reacting Br(2) with:

trans-1,2-diphenylethene
and
cis-1,2-diphenylethene

I know their structures. And I know that each Br will attach to each side of the double bond. Are there three products for each? ...with the products being isomers?

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Mar 16, 2012

Borek

Mentor

See mechanism section of the http://en.wikipedia.org/wiki/Halogen_addition_reaction

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