
%0 Journal Article
%A Tan, S 
%A Hsieh, SAK 
%T A polarographic study of pyranopyrandiones
%J Australian Journal of Chemistry
%D 1980/04/01
%V 33
%N 4
%P 907-912
%K 
%R https://doi.org/10.1071/CH9800907
%U https://www.publish.csiro.au/paper/CH9800907 
%X Polarographic reductions of four methyl-substituted pyranopyrandiones (1)-(4) have been studied at various pH values. Their reducibility and the probable reduction mechanisms are discussed in relation to their structures. The half-wave potentials of their first reduction waves in neutral media show linear correlation with the HMO energies of the lowest vacant &#960; molecular orbitals. 
