Question

The compounds P, Q and S
were separately subjected to nitration using HNO₃/H₂SO₄
mixture. The major product formed in each case respectively,
is :

Answer 1

Answer:

Where are the compounds g

Answer 2

Option C is the correct option.

Explanation:

• Nitration using concentrated HNO3 and H2SO4 is a very commom reaction in organic chemistry.

• This reaction uses the electrophilic substitution process as the electrophile NO2+ is generated by reaction between the nitric acid and sulphuric acid.

• In the compound P, the compound has the Oh group and COOH group attached to the benzene ring.

• OH is ortho para directing group and COOH is meta directing group.

• So nitro group at ortho of OH and meta of COOH is the product.

• In Q, we can see the presence of OCH3 group at 1 and OH at 4 of benzene.

• OCH3 is a stronger ortho para directing group.

• So nitro group will be attached at ortho of the Methoxy group.

• In S, there's the Ph-COO group or the benzoyl group attached to the benzene ring.

• Benzoyl group is ortho para directing group, but because of the steric hindrance at ortho, nitration will occur at para position.

• So correct option is option C.

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