Question Detail

CHM 102 Alkynes: Structure, Bonding, and Nomenclature Objective Question
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Question

Which catalyst is used for the partial hydrogenation of an alkyne to a cis-alkene?
Options
A Pt or Pd (full hydrogenation)
B Lindlar's catalyst (Pd/CaCO3 with quinoline)
Correct Answer
C Raney nickel
D Wilkinson's catalyst
Correct Answer

Option B is the correct answer.

Detailed Explanation

Lindlar's catalyst (poisoned palladium) hydrogenates alkynes to cis-alkenes without further reduction to alkanes.

Hint

Syn addition, cis product.

Question Info

Course: CHM 102
Topic: Alkynes: Structure, Bonding, and Nomenclature
Type: Objective
Difficulty: Not specified
Question 199 of 1999
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