Respuesta :
It is a)true that could prepare 1-bromo-4-nitrobenzene if bromobenzene was prepared first by EAS bromination followed by an EAS nitration reaction.
what is EAS nitration reaction?
The mechanism of the electrophilic substitution reaction known as nitration involves the attack of the nitronium ion (NO3+), an electrophile from nitric acid, on the benzene ring, which leads to the formation of nitrobenzene in the end.
EAS a powerful nitronium ion electrophile is produced during nitration when nitric acid reacts with a catalytic acid. Two products, 1-bromo-4-nitrobenzene (para) and 1-bromo-2-nitrobenzene, are formed when nitronium ion reacts with bromobenzene predominantly at ortho + para locations (ortho). Although the nitro group can theoretically attach to three different places, the activation energies for attacks on the Br at orthogonal and paragonal positions are lower than those for attacks at the meta position, making BR ortho, para-directing
Hence It is true that could prepare 1-bromo-4-nitrobenzene if bromobenzene was prepared first by EAS bromination followed by an EAS nitration reaction.
To know more about EAS nitration reaction from the given link
https://brainly.com/question/15605926
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