Question

Draw one enantiomer of the major product of the following Diels? Alder reaction. (Use wedge/dash bonds to indicate the orientation of substituents in the product. Hydrogen atoms on chirality centers must be shown explicitly.)

Answer 1

Concepts and reason

The concept used to solve this problem is based on Diel’s-Alder reaction.

The Diel’s-Alder reaction is a reaction between a diene and a dienophile in the presence of heat or light. In this reaction, a conjugated diene reacts with an alkene which is called a dienophile to form a [4+2] cycloaddition compound in the presence of heat or light.

Fundamentals

This reaction is a pericyclic reaction. The cycloaddition between a diene and an alkene or substituted alkene occurs in a concerted manner that is, in a single step to form the final product.

The diene and dienophile are shown as follows:

The [4+2] cycloaddition occurs as follows:

Ans:

The product formed is as follows: