Question 8.6: Predict the product of the following Diels–Alder reaction:

Predicting the Product of a Diels–Alder Reaction

Predict the product of the following Diels–Alder reaction:

S t r a t e g y
Draw the diene so that the ends of its two double bonds are near the dieno-phile double bond. Then form two single bonds between the partners, convert the three double bonds into single bonds, and convert the former single bond of the diene into a double bond. Because the dienophile double bond is cis to begin with, the two attached hydrogens must remain cis in the product.