Question

Consider following sequence of reactions.

Which of the following is/are correct?

• A. P has $12\alpha H$
• B. Q can be prepared by reaction of propyne with $H{g}^{2+}/H^{+}/H_{2}O$
• C. 4 $H^{\prime }s$ can be replaced by reaction of ${}^{-}OD\left(\text{trace}\right)/D_{2}O\left(\text{excess}\right)$ with S
• D. Q can be prepared by ozonolysis of 3-ethyl-2,4-dimethylpenta-1,4-diene

Answer 1

Answer: (A), (B)

The correct options are
A P has $12\alpha H$
B Q can be prepared by reaction of propyne with $H{g}^{2+}/H^{+}/H_{2}O$


(a) P has $12\alpha H$.

(b) Propyne upon Oxymercuration-Demercuration reaction furnishes ketone through enol inetrmediate.

(c) Only $3\alpha H$ are present in S, so only those can be abstraced by base.

(d)