Question

Identify the alkynes $A\left(C_{10}{H}_{18}\right)$ and $B\left(C_{10}{H}_{16}\right)$ which gives the following reactions:

$\underset{\downarrow C_2{H}_{5}MgBr}{\text{Alkyne}\left(A\right)\underset{2mol}{\overset{H_2+Pl}{\to }}}\text{Decane}$

$\left(B\right)+C_2{H}_6$ (gas)

Answer 1

Since alkyne (A) reacts with Grignard reagent, so it must have a terminal action H atom. Hence, A is Dec-1-yne and B formed by hydrogenation is Decane.