Chlorine and bromine react in the dark with alkenes. The reaction shown below affords a single major product as a racemic mixture Br Br Br2 'Br Br For the mechanism step below, draw curved arrows to show electron reorganization. Consider the formation of just one of the produ

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Chlorine and bromine react in the dark with alkenes. The reaction shown below affords a single major product as a racemic mixture.

 

For the mechanism step below, draw curved arrows to show electron reorganization. Consider the formation of just one of the product stereoisomers.

I am not sure if I have the arrows correct in this reaction: (see picture)

### Reaction of Alkenes with Bromine

**Overview:**
- Alkenes react with bromine (Br\(_2\)) in the dark. This reaction produces a single major product in the form of a racemic mixture.

**Reaction Diagram:**
- The diagram shows the reaction of bromine with a cyclohexene to form a vicinal dibromide. The starting compounds are cyclohexene and bromine, and the product is a cyclohexane with two bromine atoms added across the double bond.

**Mechanism:**
- The mechanism involves the formation of a bromonium ion intermediate.
- **Arrow-pushing Instructions:**
  - Curved arrows indicate the movement of electrons.
  - A double-headed arrow starts from the pi bond of the alkene and points to the bromine molecule, indicating the formation of a bond between the alkene and one bromine atom.
  - A second curved arrow shows the electrons from the bromine-bromine bond moving to the other bromine atom, suggesting the formation of a bromide ion.

This reaction highlights the regioselectivity and stereochemistry involved in halogen addition to alkenes.
Transcribed Image Text:### Reaction of Alkenes with Bromine **Overview:** - Alkenes react with bromine (Br\(_2\)) in the dark. This reaction produces a single major product in the form of a racemic mixture. **Reaction Diagram:** - The diagram shows the reaction of bromine with a cyclohexene to form a vicinal dibromide. The starting compounds are cyclohexene and bromine, and the product is a cyclohexane with two bromine atoms added across the double bond. **Mechanism:** - The mechanism involves the formation of a bromonium ion intermediate. - **Arrow-pushing Instructions:** - Curved arrows indicate the movement of electrons. - A double-headed arrow starts from the pi bond of the alkene and points to the bromine molecule, indicating the formation of a bond between the alkene and one bromine atom. - A second curved arrow shows the electrons from the bromine-bromine bond moving to the other bromine atom, suggesting the formation of a bromide ion. This reaction highlights the regioselectivity and stereochemistry involved in halogen addition to alkenes.
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