Question

Choose the reagent to carry out the reaction. $ C{{H}_{3}}C\equiv CC{{H}_{3}}\xrightarrow[{}]{{}}\underset{cis\text{ }form}{\mathop{C{{H}_{3}}CH=CHC{{H}_{3}}}}\, $

• A. $ {{H}_{2}}+ $ Lindlar reagent
• B. $ Li+N{{H}_{3}} $
• C. $ Conc.\,{{H}_{2}}S{{O}_{4}} $
• D. $ {{H}_{2}}O+{{H}^{+}} $

Answer 1

Answer: (A)

Lindlars catalyst gives cis-hydrogenation product.