1. Introduction
It has been several development studies about torquoselectivity during recent years. This property can be defined as the preference by the outward or inward of the substitutes in the electrocyclic ring-opening reactions 1–6. Traditionally, this property has been aboard into the Woodward-Hoffmann rules using the orbital symmetry7,8. The studies using the Woodward-Hoffmann rules in electrocyclic reactions establish a relationship between electrocyclic ring-opening reactions with an electronic reorganization thought pericyclic process. However, in several reactions it pericyclic reorganization cannot explain the experimental data in electrocyclic reactions or reaction yields. Therefore, new points of view beyond orbital symmetry is necessary 9–16.