A semiempirical SCF-MO study of the tautomeric forms of 3-acetyl tetronic- and tetramic acids

SummaryA number of tautomeric geometries of 3-acetyl tetramic acid and 3-acetyl tetronic acid were examined using the AM1 and PM3 methods. The results are compared with experimental data and with studies using MNDO and older methods, with the conclusion that both AM1 and PM3 provide satisfactory models of the behaviour of these species.