Woodward-Hoffmann Rules

Orbital-symmetry rules used to predict whether pericyclic reactions are allowed under thermal or photochemical conditions.

Articles with this tag: 2 Updated: August 23, 2026

Articles with this tag

Conrotatory and Disrotatory Modes in Electrocyclic Reactions Conrotatory and disrotatory Definitions and distinctions between conrotatory and disrotatory electrocyclic motions, orbital-symmetry basis, thermal vs photochemical behavior, examples, and synthetic significa…

Sigmatropic reaction A sigmatropic reaction is a concerted pericyclic rearrangement in which a sigma bond migrates across a conjugated pi system, reorganizing connectivity within a single molecule and…