Alan R. Katritzky - Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611-7200 USA
Richard R. Musgrave - Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611-7200 USA
Jaco C. Breytenbach - Center for Heterocyclic Compounds, University of Florida, Gainesville, Florida 32611-7200 USA