Question

Identify product [A], [B], and [C] in the following reaction sequence.

• A.

  

• B.

  

• C.

  

• D.

  

Hint:

For reactions involving alkyne to alkene conversion, ozone and further reduction reactions, always remember the key intermediates and their transformations.

Answer 1

The Correct Option is A

In this reaction sequence:

• The Pd/C reduction of the alkyne leads to an alkene [A].
• Ozone cleavage of the alkene gives an aldehyde [B], and further reduction with Zn and water forms an alcohol [C].