Abstract: A spectral and kinetic investigation has been carried out of the transformations undergone in aqueous solution by the parent flavylium ion and its 4'methyl and 4'methoxy derivatives. Evidence is reported for the existence at some time under some condition of seven species, the flavylium ion (F'), two pseudobases, a 2-hydroxy adduct (B2) and a 4- hydroxy adduct (B4), the cis-2-hydroxychalcone and its ionized form (cC and cC-), and the ...
