Question

Identify $X$ in the following sequence of reactions.

• A.
  
• B.
  
• C.
  
• D.
  

Answer 1

Answer: (B)

The compound $X$ is represented by the option (B). The first step is dehydrohalgenation to form alkyne. Two molecules of $HBr$ are eliminated. In the next step, the alkyne is reduced to trans alkene by treatment with sodium in liq ammonia. This is an example of birch reduction.