Question

Complete the following:

\[\ce{2 - butyne ->[Lindlar Catalyst]}\]

Answer 1

\[\begin{array}{cc}
\phantom{........................................}\ce{H}\phantom{......}\ce{H}\\\phantom{........................................}\backslash\phantom{......}/\\
\ce{CH3 - C ≡ C - CH3 + H2 ->[Pd/CaCO3][Linder's catalyst] C = C}\\
\phantom{........................................}/\phantom{......}\backslash\\\phantom{........................................}\ce{\underset{\text{Cis - 2}}{CH3}}\phantom{......}\ce{\underset{\text{- 2 butene}}{CH3}}
\end{array}\]