The reagent used for getting trans alkene from alkyl substituted acetylene with hydrogen is :
A
Na in liq.NH3
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B
anhy. AlCl3
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C
Zn+HCl
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D
H2 in presence of Ni (or) Pt (or) Pd
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Solution
The correct option is BNa in liq.NH3 For getting trans product, Na/liq. ammonia used as reducing agent. Reaction: RC≡CR+H2Na/NH3orLiAlH4−−−−−−−−−−−→RCH=RCH (trans alkene)