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Multiple Choice

Catalytic hydrogenation of cyclohexene gives which product?

Catalytic hydrogenation adds hydrogen across a carbon–carbon double bond, turning alkenes into alkanes. In cyclohexene, the double bond is reduced by adding one hydrogen to each of the two carbons, converting the C=C to a C–C single bond and yielding cyclohexane. This process saturates the ring, so no double bonds remain. The catalyst (such as Pt, Pd, or Ni) activates H2 and facilitates the syn addition of hydrogen.

Catalytic hydrogenation adds hydrogen across a carbon–carbon double bond, turning alkenes into alkanes. In cyclohexene, the double bond is reduced by adding one hydrogen to each of the two carbons, converting the C=C to a C–C single bond and yielding cyclohexane. This process saturates the ring, so no double bonds remain. The catalyst (such as Pt, Pd, or Ni) activates H2 and facilitates the syn addition of hydrogen.