Question

Which of following will react with $Na/liqN{H}_3$?

• A. $C{H}_3-C\equiv C-C{H}_3$
• B. $C{H}_3-C\equiv C-H$
• C. Both (a) and (b)
• D. None of the above

Answer 1

The correct option is C Both (a) and (b)

Hydrogenation of alkynes(Addition of $H_2$) takes place in the presence of $Na/liqN{H}_3$. This is known as birch reduction. In birch reduction, trans alkene is formed. Hence the correct answer will be option (c).