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Multiple Choice
Which of the following organic chemistry reactions involves the addition of a halogen to an alkene?
A
Hydroboration-oxidation
B
Ozonolysis
C
Hydration
D
Halogenation
Verified step by step guidance
1
Identify the functional group involved in the reaction. In this case, we are dealing with an alkene, which is characterized by a carbon-carbon double bond (C=C).
Understand the nature of the reaction. Halogenation involves the addition of halogen atoms (such as Cl2 or Br2) to a molecule. In the context of alkenes, this means adding halogen atoms across the double bond.
Compare the given reactions: Hydroboration-oxidation, Ozonolysis, and Hydration. Each of these reactions has a specific mechanism and outcome.
Hydroboration-oxidation involves the addition of water (H2O) across the double bond, followed by oxidation, resulting in an alcohol. Ozonolysis cleaves the double bond, forming carbonyl compounds. Hydration adds water across the double bond, forming an alcohol.
Recognize that Halogenation is the reaction where a halogen is added across the double bond of an alkene, resulting in a dihalide. This matches the description of adding a halogen to an alkene, which is not covered by the other reactions listed.