Structure–reactivity factors for exciplex isomerization of quadricyclene and related compounds

Abstract

The quadricyclenes (1) and (3) are equally effective in exciplex isomerization although other cage hydrocarbons do not undergo efficient reaction when sensitized by aromatic fluorophores; irradiation of charge-transfer complexes of (1) and (3) and electron-deficient alkenes results in efficient valence but not geometrical isomerization.