Interpretation:Potential-energy/reaction-coordinate diagrams for the two propagation steps of the radical bromination of benzene should be sketched.
Concept introduction: Analogous to hydrocarbons the benzene can also undergo initiation to generate bromine radicals; propagation of radicals formed and finally termination. This sequence can be outlined as follows:
Step1: Initiation via homolytic cleavage of
Step2: Propagation: In first of the propagation steps, bromine radical from step 1 abstracts hydrogen radical from
In subsequent propagation step,phenyl radical abstracts
Step3: Termination: Bromine radicals generated in propagation steps get quenched upon combination with one another illustrated as follows:
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Organic Chemistry: Structure and Function
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- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning