Which is the best sequence of reactions for the preparation of p-bromostyrene from ethylbenzene?
E)None of these syntheses is satisfactory.

Question

Quizplus · Accepted Answer

The best sequence of reactions for the preparation of p-bromostyrene from ethylbenzene involves the following steps:
1. Bromination of ethylbenzene: Ethylbenzene is treated with bromine in the presence of either iron or aluminum bromide as a catalyst to produce 1-bromo-2-phenylethane.
2. Dehydrohalogenation: The 1-bromo-2-phenylethane is then treated with a strong base like NaOH or KOH to undergo dehydrohalogenation and produce styrene. 
3. Bromination of styrene: Styrene is then brominated using N-bromosuccinimide (NBS) in the presence of either benzoyl peroxide or light to produce p-bromostyrene. 
The given choice B shows this sequence of reactions.

Which Is the Best Sequence of Reactions for the Preparation