Question

Identify the product X obtained in the following reaction.

\[\ce{CH3 - (CH2)4 - CH3 ->[Cr2O3][773 K, 10 - 20 atm] X}\]

विकल्प

• \[\ce{2CH3 - CH = CH2 + H2}\]

• \[\ce{CH3 - (CH2)3 - CH = CH2 + H2}\]

• \[\ce{CH3 - CH = CH - CH3 + CH2 = CH2 + H2}\]

• \[\ce{C6H6 + 4H2}\]

Answer 1

\[\ce{C6H6 + 4H2}\]

Explanation:

Higher alkane with more than 5 carbon atom undergoes cyclization to form benzene in presence of Cr₂O₃ under 10 to 20 atm pressure at 773 K.

\[\ce{\underset{{n}-Hexane}{CH3 - (CH2)4 - CH3} ->[Cr2O3][773 K, 10 - 20 atm] \underset{Benzene}{C6H6} + 4H2}\]