Diels-Alder Tutorial After completing the tutorial, you should be able to 1. identify dienes and dienophiles 2. determine whether the diene or dienophile will undergo a Diels-Alder reaction 3. predict the stereochemistry using a given diene or dienophile 4. draw the mechanism and product of the Diels-Alder reaction 5. recognize when to use the Diels-Alder Reaction. Step 3: Now let's focus on the dienophile. The dienophile is the electrophile in the Diels-Alder reaction, so electron withdrawing substituents on the dienophile increase reactivity. Select the dienophiles that would be good substrates in the Diels-Alder reaction