M-nitro ethylbenzene on Br₂ and UV light, what is the product?

The reaction of M-nitro ethylbenzene with bromine (Br₂) in the presence of UV light typically leads to a substitution reaction. The UV light facilitates the formation of bromine radicals, which can then react with the aromatic ring of the compound.

Expected Product

The primary product of this reaction is 1-bromo-2-nitroethylbenzene. The nitro group, being a strong electron-withdrawing group, directs the bromination to the ortho and para positions relative to itself.

Mechanism Overview

• Formation of Radicals: UV light generates bromine radicals from Br₂.
• Aromatic Substitution: The bromine radical attacks the aromatic ring, leading to substitution.
• Product Formation: The final product is determined by the position of substitution influenced by the nitro group.

In summary, the reaction results in the formation of 1-bromo-2-nitroethylbenzene, with the nitro group guiding the bromination process.