Question Detail

CHM 102 Practice Questions Objective Question
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Question

The reagent needed to convert 2-butyne to cis-2-butene is :
Options
A H2/Pt
B H2/Lindlar's catalyst
Correct Answer
C Li/NH3
D Na/NH3
Correct Answer

Option B is the correct answer.

Detailed Explanation

Hydrogenation of 2-butyne with H2 and Lindlar's catalyst (Pd/BaSO4 poisoned with quinoline) gives cis-2-butene via syn addition of H2. This is a selective partial hydrogenation.

Hint

Which reagent gives cis alkene from alkyne hydrogenation?

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 1158 of 1999
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