Question

Outlined below is a syntheis of the gypsy moth sex attractant(E) (A type of pheromone). Give the structure of the gypsy moth sex attractant(E) and of the intermediates in the synthesis.The other reagents that can be used for theconversion of (C) to (D) is

• A. Cold, dilute $KMn{O}_4/O{H}^{-}$
• B. $Li/liq.N{H}_3$
• C. $H_2/Niexcess$
• D. $H_2/Pd-BaS{O}_4$

Answer 1

The correct option is D $H_2/Pd-BaS{O}_4$

Conversion of C to D is a partial reduction (hydrogenation). Its conversion of alkyne to alkene which can be done by- Reaction of alkyne with hydrogen in presence of Na/Liq. ammonia. Reaction of alkyne with hydrogen in presence of Lindlar's catalyst $Pd-BaS{O}_4$.