Chapter 28, Problem 28.28P

Interpretation Introduction

Interpretation:

Although the stereochemistry of Eq. 28.39 cannot be determined from the reaction stereochemistry is expected from orbital symmetry considerations is to be stated.

Concept introduction:

Generally, electrocyclic reactions are a pericyclic reaction which occur intramolecularly. These reactions will result in the formation of ring compounds under the influence of heat or light. Notably, in this process one new sigma bond is formed and one old π-bond is consumed. Intriguingly, the reverse ring opening electrocyclic reaction can also be possible to occur under the same reaction mechanism but in reverse manner. In-phase orbital overlap results in symmetry allowed electrocyclic reactions.