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Question

Identify the most probable product in the given reaction 

The correct answer is

The reaction depicted in the given image is an example of the radical bromination mechanism, initiated by peroxide. This is a common reaction used to convert alkanes or alkyl groups attached to aromatic rings into brominated compounds.

Step-by-step Explanation:

  1. Initiation Step: In the presence of benzoyl peroxide, free radicals are generated. Peroxides decompose to form two benzoyloxy radicals, which further decompose to form phenyl radicals and carbon dioxide.
  2. Propagation Step: The bromine radicals formed abstract a hydrogen atom from the methyl group attached to the benzene ring, forming a benzyl radical.
  3. Bromination: The benzyl radical reacts with a molecule of bromine to form the brominated product.

Considering the reaction conditions and radical stability, the most stable radical formation is at the benzylic position, leading to bromination at this site.

Correct Answer:

The presence of a benzylic radical stabilizes the intermediate, making this substitution the most favored and thereby identifying this as the most probable product.

This technique is specifically effective when there are benzylic or allylic hydrogens that radicalize easily, leading to the formation of a stable radical before the Halogen is added.

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Important Questions from Organic Synthesis

  1. The major products X and Y formed in the following reaction sequences are

  2. For the following reaction, the possible product(s) is/are

  3. The reaction(s) that yield(s) X as the major product is (are) 

  4. The major products E and F in the following reaction sequence are 

  5. Consider the following reaction sequence. The correct option(s) is (are)

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