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Sulphonation of Aromatics

Which of the ...

Question

Which of the following compounds will undergo racemisation when solution of $K O H$ hydrolyses?

A

1 and 2

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B

2 and 4

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C

3 and 4

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D

1 and 4

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Solution

The correct option is C 3 and 4
$3$ & $4$ will undergo racemisation because $3, 4$ has chiral carbon. Other compounds do not have chiral carbon.

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