Question
The trans-alkenes are formed by the reduction of alkynes with
Sn - HCl
H2 – Pd/C, BaSO4
NaBH4
Na/liq. NH3
Solution
D.
Na/liq. NH3
Na/Liq. NH3 reduces alkynes into trans alkene (trans addition).
Birch reduction is the anti addition. So trans alkene will be produced.