Pyrene-benzoylthiophene exciplexes as selective catalysts for the [2+2] cycloaddition between cyclohexadiene and styrenes.
Efficient intramolecular fluorescence quenching in pyrene-benzoylthiophene systems leads to formation of exciplexes. These species interact with 1,3-cyclohexadiene (or styrenes), leading to reactive excited triplexes. The overall process affords [2+2] cross-cycloadducts with an average yield of 57%.
González-Béjar
Maria
M
Departmento Q. OrgAnica, Instituto de Ciencia Molecular/ICMOL, Universidad de Valencia, Polígono La Coma, sn, 46980 Paterna, Spain.
Bentama
Abdeslem
A
Miranda
Miguel Angel
MA
Stiriba
Salah-Eddine
SE
Pérez-Prieto
Julia
J