Chapter 19, Problem 19.6YT

Interpretation Introduction

Interpretation:

Which of the molecules $\text{A-C}$ could be produced from an alkyne and would require a poisoned catalyst is to be determined.

Concept introduction:

A poisoned catalyst is simply a metal catalyst that has been specially treated to decrease its catalytic ability, thus making possible a slower and more controlled reaction.

The reduction of an alkyne to an alkene via catalytic hydrogenation favors the production of the cis isomer over the trans.