Rank the following dienes in order of increasing stability (least to most).

Which of the following dienophiles is least reactive in a Diels-Alder reaction?

A thermodynamically-controlled process describes a reaction that ________.

Rank the following dienes in order of decreasing heat of hydrogenation (highest to lowest).

Identify the major products possible from the following reaction?

The Diels Alder reaction is a concerted reaction. Define concerted.

Identify the expected major product(s) for the following reaction.

Identify the diene and dienophile expected to produce the Diels-Alder product shown in the box below.

Which one of the following compounds is not an expected product of the reaction between 1,3-butadiene and HBr?

Identify the pericyclic reaction in which one pi bond is broken and one sigma bond is formed.