When meta xylene is subjected to nitration, the major mononitrated product obtained is

Short Answer

Expert verified
Answer: The major mononitrated product obtained when meta-xylene is subjected to nitration is 1,3-dimethyl-4-nitrobenzene.

Step by step solution

01

Draw the structure of meta-xylene

Meta-xylene is a derivative of xylene that has two methyl groups attached to a benzene ring at positions 1 and 3. The structure looks like this: (meta-xylene): ``` CH3 | 1-C-3 | | 6-C-C-2 | | C-4 | CH3 ```
02

Identify possible positions for nitration

Nitration of an aromatic compound like xylene involves the substitution of a nitro group (NO2) at a position on the benzene ring. There are three possible positions in meta-xylene where a nitro group can be added: 2, 4, and 6.
03

Consider the directing effect of the methyl groups

The two methyl groups in meta-xylene have a directing effect on which position is most likely to be nitrated. Methyl groups are electron-donating, and they direct the incoming electrophile (here, the nitronium ion, NO2+) to the ortho and para positions relative to themselves. In the case of meta-xylene, the 2 and 6 positions are ortho to both methyl groups, while the 4 position is para to the methyl groups.
04

Determine the major mononitrated product

Based on the directing effect of the methyl groups, the major mononitrated product will have nitro group substitution at the 4 position, since it's para to both methyl groups. The structure of this major mononitrated product will look like this: (major mononitrated product): ``` CH3 | 1-C-3 | | 6-C-C-2 | | C-4 | NO2 ``` Hence, the major mononitrated product obtained when meta-xylene is subjected to nitration is 1,3-dimethyl-4-nitrobenzene.

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