Which diene and dienophile would react to give the following Diels-Alder product?
A) I
B) II
C) III
D) IV
E) V

Question

Which diene and dienophile would react to give the following Diels-Alder product?  
A) I 
B) II 
C) III 
D) IV 
E) V

Quizplus · Accepted Answer

The Diels-Alder reaction involves a diene and a dienophile, where the diene is a molecule with two double bonds and the dienophile is a molecule with one double bond. In this case, the diene has a cyclic structure with two double bonds and the dienophile has a double bond and an electron-withdrawing group (ester). Only option II has a dienophile with an ester group, which can stabilize the developing positive charge during the reaction. Therefore, option II is the best choice for the Diels-Alder reaction to give the shown product.

Which Diene and Dienophile Would React to Give the Following