Chapter 16, Problem 16.72P

Interpretation Introduction

Interpretation: The synthesis of X from the given starting materials is to be stated and the stereochemistry observed in X is to be indicated.

Concept introduction: Curved arrows aid in determining the movement and flow of electrons in the reaction. The electrons that take part in the chemical reactions are shown by the curved arrows.

A chemical reaction that involves $\left[4+2\right]$ cycloaddition is called Diels-Alder reaction. The reactant molecules that give rise to the product are diene and dienophile. The rate of reaction is fast when the electronegative group is attached to dienophile. In this type of reaction, syn addition takes place.