Reduction of an alkyne to the double bond stage can yield a cis alkene or trans alkene (except in cases where triple bond is at the end of the chain ) Reduction of alknes with sodium or lithium in liquid NH_(3) yields predominantly trans alkene. Hydrogenation of alkynes with Lindlar's catalyst or a nickel boride called P_(2) catalyst yeilds is alkene (as high as 98%) If Pd/C/H_(2) is used in the absence of a catalyst poison, two equivlanet of H_(2) are added forming alkanes.Shown below is the first step in hte synthesis of hte important perfume constituent, cis-Jasmone which reagents you choose to carry out this last step?

Reduction of an alkyne to the double bond stage can yield a cis alkene

1.	Reduction of an alkyne to the double bond stage can yield a cis alkene or trans alkene (except in cases where triple bond is at the end of the chain ) Reduction of alknes with sodium or lithium in liquid NH_(3) yields predominantly trans alkene. Hydrogenation of alkynes with Lindlar's catalyst or a nickel boride called P_(2) catalyst yeilds is alkene (as high as 98%) If Pd/C/H_(2) is used in the absence of a catalyst poison, two equivlanet of H_(2) are added forming alkanes.Shown below is the first step in hte synthesis of hte important perfume constituent, cis-Jasmone which reagents you choose to carry out this last step?
Answer» `Li//NH_(3)` Lindlar's catalyst `Na//C_(5)H_(5)OH` `Pt//H_(2)` ANSWER :B