More information: Shota Hamatani et al, Aza‐Diarylethenes Undergoing Both Photochemically and Thermally Reversible Electrocyclic Reactions, Angewandte Chemie International Edition (2024).

who discussed orbital symmetry in the context of electrocyclic reactions[2]. Despite their significance, these contributions did not gain the recognition they deserved until after Woodward and ...

These rules apply, strictly speaking, to the stereospecificity of a particular reaction type, namely the electrocyclic ring-closing and ring-opening reactions of conjugated systems. Here ...

Table S1. Calculated (B3LYP/6-31G(d) ) Geometries and transition normal modes for the electrocyclic ring openings 1-4.