Question

The compound(s) that participate(s) in Diels-Alder reaction with maleic anhydride is/are

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

The Correct Option is A, B

The Diels-Alder reaction is a [4+2] cycloaddition reaction between a conjugated diene and a dienophile. In this reaction, the diene must be able to adopt an s-cis conformation, and the dienophile is typically an electron-deficient alkene or alkyne. Maleic anhydride is a typical dienophile used in such reactions due to its electron-withdrawing groups, enhancing its reactivity.

Let's analyze the options provided to determine which compounds can participate in a Diels-Alder reaction with maleic anhydride:

The first compound:

This compound is a conjugated diene capable of adopting an s-cis conformation. Therefore, it can effectively participate in a Diels-Alder reaction with maleic anhydride.

The second compound:

This compound is another example of a conjugated diene that can adopt an s-cis conformation, making it suitable for reaction with maleic anhydride in a Diels-Alder reaction.

The third compound:

This compound lacks the required conjugation or ability to adopt the s-cis conformation, making it unsuitable for the Diels-Alder reaction with maleic anhydride.

The fourth compound:

This compound also lacks the necessary conjugated diene structure and s-cis conformation, thus it cannot participate in the Diels-Alder reaction with maleic anhydride.

Based on the above analysis, the compounds capable of participating in Diels-Alder reactions with maleic anhydride are as shown in options

and.