Chapter 28, Problem 28.41AP

Interpretation Introduction

Interpretation:

The reaction in Fig. P28.41 occurs as a sequence of two pericyclic reactions. The intermediate A, and the two reactions are to be stated.

Concept introduction:

Commonly, cycloaddition reaction can be referred as a reaction of two different π-electron systems to form a ring product. Notably, in this reaction two new sigma bonds are formed in product with the disappearance of two fewer π-bonds. In other words, cyclo addition reaction can be best described as the reaction of number of electrons involved. In [4+2] cycloaddition one component is having four electrons and other component is having two electrons.