Ct. Supuran et al., STYRYL PYRYLIUM-SALTS - 4 SYNTHESIS OF MONO-DERIVATIVE, BIS-DERIVATIVE, AND TRIS-DERIVATIVE CONTAINING 2-HYDROXY-5-(2-PHENYL-2-PROPYL)-STYRYL MOIETIES, Revue Roumaine de Chimie, 42(5), 1997, pp. 401-406
Reaction of 2-hydroxy-5-(2-phenyl-2-propyl)-benzaldehyde with 2,4,6-tr
i- and 2,3,5,6-tetra-substituted pyrylium salts, containing one, two o
r three reactive methyl groups, afforded the mono-, his-and tris-styry
l pyrylium derivatives, respectively, which were characterized by elem
ental analysis, IR, UV-VIS: and H-1-NMR spectroscopy.