Suitable three-dimensional structure of the two products obtained by attack of bromide ion at both of the carbon atoms in the cyclic bromonium ion should be drawn. Concept introduction: Alkenes are considered electron-rich and undergo bromination addition reaction with Br 2 in presence of CCl 4 by electrophilic addition reaction. The mechanism of Br 2 addition occurs in two steps. In the first step, nucleophilic olefin abstracts the electrophilic bromine atom from Br 2 and this result in attack of Br + on the electron-rich olefinic bond that forms a sigma bond to each end of the olefinic bond. Such interaction leads to a three-membered bromonium ion intermediate. In the second step, the strained bromonium ion intermediate opens while Br − attack from behind the electron-deficient carbon analogous to S N 2 attack.

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Chapter 10.6, Problem 14E

Interpretation Introduction

Interpretation:Suitable three-dimensional structure of the two products obtained by attack of bromide ion at both of the carbon atoms in the cyclic bromonium ion should be drawn.

Concept introduction:Alkenes are considered electron-rich and undergo bromination addition reaction with Br2 in presence of CCl4 by electrophilic addition reaction.

The mechanism of Br2 addition occurs in two steps. In the first step, nucleophilic olefin abstracts the electrophilic bromine atom from Br2 and this result in attack of Br+ on the electron-rich olefinic bond that forms a sigma bond to each end of the olefinic bond. Such interaction leads to a three-membered bromonium ion intermediate.

In the second step, the strained bromonium ion intermediate opens while Br− attack from behind the electron-deficient carbon analogous to SN2 attack.

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