Question

The treatment of benzene with iso - butene in the presence of sulphuric acid gives:

Options

• iso - butyl benzene

• Tert - butyl benzene

• n- butyl benzene

• No reaction

Answer 1

Tert - butyl benzene

Explanation:

When benzene and iso-butene react with each other in the presence of H₂SO₄, t-butyl benzene is created. The following happens as a result.

\[\begin{array}{cc}
\phantom{.....}\ce{CH3}\phantom{..........................}\ce{CH3}\phantom{............}\\
\phantom{}|\phantom{..............................}|\phantom{..........}\\
\phantom{}\ce{CH3 - C = CH2 + H2SO4 -> CH3 - C^{+} -CH3 + HSO^{-}4}
\end{array}\]