Q16 · CSIR-NET Chemistry, December 2016
Paper: CSIR-NET December 2016 · Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Marks: 2 · Difficulty: Medium
Under review — part of this question (a structure or an option) is not clear in the source scan. 4AB is checking it against the original book; the answer shown may change.
The major product formed in the dinitration of 4-bromotoulene is
(a)
(b)
(c)
(d)
Answer
Under review — not yet confirmed.
Answer (as printed): B
Explanation
The mechanism of the reaction is shown below: When meta directing group is meta to the ortho-para directing group then incoming electrophiles goes ortho to the m-directing group.
Explanation as extracted from the printed page; notation may be imperfect.
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