Question

The reagent needed to convert 2-butyne to cis-2-butene is

Answer 1

Answer:

the reagent is H2/lindlars catalyst

Answer 2

2-butyne can be converted into cis 2-butene by following step of reaction -

React 2-butyne with H $_{2}$   / Lindlar Catalyst , cis 2-butene is formed .

The reagent is H $_{2}$   / Lindlar Catalyst .

• It is a heterogeneous catalyst .
• It consist of palladium ( Pd ) deposited on calcium carbonate ( CaCO$_{3}$ ) .
• Lindlar catalyst  is used for the hydrogenation of alkynes ( triple bond ) to alkenes ( double bond ) .