
%0 Journal Article
%A Bick, IRC 
%A Horn, DHS 
%T Nuclear magnetic resonance studies. V. The tautomerism of tasmanone and related &#946;-triketones
%J Australian Journal of Chemistry
%D 1965/09/01
%V 18
%N 9
%P 1405-1410
%K 
%R https://doi.org/10.1071/CH9651405
%U https://www.publish.csiro.au/paper/CH9651405 
%X From a nuclear magnetic resonance study of the tautomerism of tasmanone and 1,1,3,3-tetramethylphloroglucinol (syncarpic acid), it is deduced that tasmanone consists of a mixture of tautomers (I) and (II) with the tautomer (I) present in the larger proportion. Similarly it is deduced that the tautomers of agglomerone (XI; R = CHMe2), 3-acetyl-O-methylfilicinic acid (XI R; = Me), ceroptene (XI; R = CH=CHPh), and usnic acid (XIII) with the extended conjugation are the more stable and populated ones. 
