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[A] overset("lindlar's")underset("cataly...

`[A] overset("lindlar's")underset("catalyst")larr CH_(3) - C -= C -CH_(3) overset("Na in ")underset(liq. NH_3)rarr [B]`
[A] and [B] are respectively

A

C is trans -2- butene

B

Both trans-2-butene

C

Trans, cis-2-butene

D

Both cis-2-butene

Text Solution

Verified by Experts

The correct Answer is:
A
Alkynes give different product with different reducing agents. With Lindlar's catalyst (Pd/BaSO4) or Ni powder, cis-alkenes are formed whereas with Na in liquid ammonia (Birch reduction), trans-alkenes are formed
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