
%0 Journal Article
%A Njau, E 
%T Electron impact studies of 4a-Methyl-4,4a-dihydrophenanthren-2(3H)-one and related phenanthrones
%J Australian Journal of Chemistry
%D 1976/12/01
%V 29
%N 12
%P 2731-2735
%K 
%R https://doi.org/10.1071/CH9762731
%U https://www.publish.csiro.au/paper/CH9762731 
%X The mass spectra of 4a-methyl-4,4a-dihydrophenanthren-2(3H)-one and closely related phenanthrenones have been studied. The suggested fragmentation processes, substantiated by high-resolution mass measurements and appropriate metastable peaks, are shown to be characteristic of compounds with the same hydro-oxo-phenanthrene chromophore. 2-Cinnamylidene-6-methyl-cyclohexanone possessing a similar chromophore is also shown to exhibit a comparable fragmentation pattern. 
