Pericyclic Reactions and Organic Photochemistry Free Download

Pericyclic reactions occur stereospecifically because the symmetry of the molecular orbitals must be conserved for the reaction to occur. We can analyze these reactions using a frontier orbital method that considers the symmetry of only the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO).Pericyclic reactions occur if the symmetries of π orbitals in the reactants and products match. These reactions are symmetry allowed. These reactions occur under relatively mild reaction conditions.