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Chapter 10: Q7P-b (page 297)

What products would you expect from reaction of the following alkenes with NBS? If more than one product is formed, show the structures of all.

Short Answer

Expert verified

In this reaction, the two product formed are not in equal proportions. The reaction at the two ends is not equal because of the formation of a unsymmetrical allylic radical. Thus, the reaction at the primary end (which is less hindered) is favoured.

Step by step solution

01

Bromination of allylic alkenes

In this reaction, the two product formed are not in equal proportions. The reaction at the two ends is not equal because of the formation of a unsymmetrical allylic radical. Thus, the reaction at the primary end (which is less hindered) is favoured.

02

Bromination of 2-methylhex-3-ene

Bromination of 2-methylhex-3-ene with NBS results in the formation of four different bromohexenes and two different allylic radicals.

The reaction is given below:

Product formation between given alkene and NBS

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Most popular questions from this chapter

Sort the radicals below from most stable to least stable.

Draw structures corresponding to the following IUPAC names: (f) 1,1-Dibromo-4-tert-butylcyclohexane.

What product(s) would you expect from the reaction of 1-methyl cyclohexene with NBS? Would you use this reaction as part of a synthesis?

What product would you expect from the reaction of 1-phenyl-2-butene with NBS? Explain.

1-phenyl 2-butene

Predict the product(s) of the following reactions:
See all solutions

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