Resumen de The Aromaticity of Pericyclic Reaction Transition States.
An approach is presented that starts from two fundamental concepts in organic chemistry, chirality and aromaticity, and combines them into a simple rule for stating selection rules for pericyclic reactions in terms of achiral Hückel-aromatic and chiral Möbius-aromatic transition states. This is illustrated using an example that leads to apparent contradictions if treated using more conventional selection rules, but is readily understood in terms of the aromatic transition-state model.
