Example image of eyePlorer eyePlorer map for 'Electrocyclic reaction': Conrotatory and disrotatory Organic chemistry Pericyclic reaction Photochemistry Pi bond Rearrangement reaction Sigma bond Stereospecificity Thermal Transition state Woodward–Hoffmann rules Nazarov cyclization reaction Cyclic compound 1,3-Butadiene Atomic orbital Cis-trans isomerism Frontier Molecular Orbital Theory HOMO/LUMO Cholecalciferol Diels–Alder reaction Endo-exo isomerism Maleic anhydride Methyl group Solvent Substituent Toluene Yield (chemistry) Beta-silicon effect Reaction rate Trimethylsilyl Bionics Cascade reaction Diarylethene Helicene Kendall Houk Wulff-Dötz reaction Fenestrane Carbene Photochemical reaction Sigmatropic reaction Photochromism