Which of the following reactions can be used to convert an alkyne to a cis-alkene?
Practice Questions
1 question
Q1
Which of the following reactions can be used to convert an alkyne to a cis-alkene?
Hydrogenation
Halogenation
Hydroboration
Ozonolysis
Hydroboration followed by oxidation converts alkynes to cis-alkenes.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following reactions can be used to convert an alkyne to a cis-alkene?
Solution: Hydroboration followed by oxidation converts alkynes to cis-alkenes.
Steps: 5
Step 1: Start with an alkyne, which is a molecule that has a triple bond between two carbon atoms.
Step 2: Add a reagent called borane (BH3) to the alkyne. This process is called hydroboration.
Step 3: The borane adds to the alkyne in a way that results in a cis configuration, meaning the hydrogen atoms will be on the same side.
Step 4: After hydroboration, you need to perform a second step called oxidation. This is usually done by adding hydrogen peroxide (H2O2) and a base like sodium hydroxide (NaOH).
Step 5: The oxidation step converts the boron atom into a hydroxyl group (-OH), resulting in a cis-alkene.
