When nitrobenzene is treated with Br 2 in the presence of FeBr 3, the major product formed is m bromonitro-benzene. Statements which are related to obtaining the m-isomer are:

Question

When nitrobenzene is treated with Br 2 in the presence of FeBr 3, the major product formed is m bromonitro-benzene. Statements which are related to obtaining the m-isomer are: (A) The electron density on meta-carbon is more than that on ortho-and para-positions (B) The intermediate carbonium ion formed after initial attack of Br ⊕ at the meta-position is least destabilised (C) Loss of aromaticity when Br ⊕ attacks at the ortho-and para-positions and not at meta-positions (D) Easier loss of H ⊕ to regain aromaticity from the meta-position than from the ortho-and para-positions

Tardigrade Admin · Accepted Answer

Correct answer is (a) The electron density on meta-carbon is more than that on ortho-and para-positionsCorrect answer is (d) Easier loss of H ⊕ to regain aromaticity from the meta-position than from the ortho-and para-positions

Q. When nitrobenzene is treated with $B r_{2}$ in the presence of $F e B r_{3}$ , the major product formed is $m$ bromonitro-benzene. Statements which are related to obtaining the $m$ -isomer are:

The electron density on meta-carbon is more than that on ortho-and para-positions

The intermediate carbonium ion formed after initial attack of $B r^{\oplus}$ at the meta-position is least destabilised

Loss of aromaticity when $B r^{\oplus}$ attacks at the ortho-and para-positions and not at meta-positions

Easier loss of $H^{\oplus}$ to regain aromaticity from the meta-position than from the ortho-and para-positions

Correct answer is (a) The electron density on meta-carbon is more than that on ortho-and para-positionsCorrect answer is (d) Easier loss of $H^{\oplus}$ to regain aromaticity from the meta-position than from the ortho-and para-positions

Q. When nitrobenzene is treated with Br2​ in the presence of FeBr3​, the major product formed is m bromonitro-benzene. Statements which are related to obtaining the m-isomer are:

The electron density on meta-carbon is more than that on ortho-and para-positions

The intermediate carbonium ion formed after initial attack of Br⊕ at the meta-position is least destabilised

Loss of aromaticity when Br⊕ attacks at the ortho-and para-positions and not at meta-positions

Easier loss of H⊕ to regain aromaticity from the meta-position than from the ortho-and para-positions

Correct answer is (a) The electron density on meta-carbon is more than that on ortho-and para-positionsCorrect answer is (d) Easier loss of H⊕ to regain aromaticity from the meta-position than from the ortho-and para-positions

Q. When nitrobenzene is treated with $B r_{2}$ in the presence of $F e B r_{3}$ , the major product formed is $m$ bromonitro-benzene. Statements which are related to obtaining the $m$ -isomer are:

The intermediate carbonium ion formed after initial attack of $B r^{\oplus}$ at the meta-position is least destabilised

Loss of aromaticity when $B r^{\oplus}$ attacks at the ortho-and para-positions and not at meta-positions

Easier loss of $H^{\oplus}$ to regain aromaticity from the meta-position than from the ortho-and para-positions

Correct answer is (a) The electron density on meta-carbon is more than that on ortho-and para-positionsCorrect answer is (d) Easier loss of $H^{\oplus}$ to regain aromaticity from the meta-position than from the ortho-and para-positions