How many of the following groups if substituted at o- and/or p - positions of chlorobenzene, increase its reactivity towards nucleophilic substitution? -CN,-(CH)3-NH(CH3),-COOH,-(NO)2,-(OCH)3

Question

How many of the following groups if substituted at o- and/or p - positions of chlorobenzene, increase its reactivity towards nucleophilic substitution? -CN,-(CH)3-NH(CH3),-COOH,-(NO)2,-(OCH)3 (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

The presence of electron-withdrawing groups

(l ik e - CN, - COO H, - N O_{2})

at

o

- and

p

-positions with respect to
halogen atom activates the aryl halide towards nucleophilic substitution reactions.

Q. How many of the following groups if substituted at o- and/or p - positions of chlorobenzene, increase its reactivity towards nucleophilic substitution? −CN,−(CH)3​−NH(CH3​),−COOH,−(NO)2​,−(OCH)3​

The presence of electron-withdrawing groups (like−CN,−COOH,−NO2​) at o- and p-positions with respect to halogen atom activates the aryl halide towards nucleophilic substitution reactions.

Q. How many of the following groups if substituted at $o$ - and/or $p$ - positions of chlorobenzene, increase its reactivity towards nucleophilic substitution?
$- CN, - (C H)_{3} - N H (C H_{3}), - COO H, - (NO)_{2}, - (OC H)_{3}$

The presence of electron-withdrawing groups $(l ik e - CN, - COO H, - N O_{2})$ at $o$ - and $p$ -positions with respect to
halogen atom activates the aryl halide towards nucleophilic substitution reactions.