Question

$A\underset{H_{2}S{O}_4}{\overset{H_{2}O}{\to }}B$

$A\underset{2.NaB{H}_4}{\overset{1.Hg(OAc{)}_2,H_{2}O}{\to }}B$

$A\underset{2.H_2{O}_2,O{H}^{-}}{\overset{1.B{H}_3,THF}{\to }}B$

From the following, A may be:

• A. $\text{But-1-ene}$
• B. $\text{Pent-2-ene}$
• C. $\text{4-Methylcyclopent-1-ene}$
• D. $\text{3-methylcyclohex-1-ene}$

Answer 1

The correct option is C $\text{4-Methylcyclopent-1-ene}$

Symmetrical alkene gives the same product on acid-catalysed hydration, oxymercuration-demercuration and hydroboration-oxidation.