
%0 Journal Article
%A Arena, Phillip 
%A Brown, Roger F. C. 
%A Eastwood, Frank W. 
%A McNaughton, Don 
%T Synthesis of Precursors for the Pyrolytic Formation of Pentatetraenones
%J Australian Journal of Chemistry
%D 1999/08/19
%V 52
%N 7
%P 663-672
%K 
%R https://doi.org/10.1071/CH98174
%U https://www.publish.csiro.au/paper/CH98174 
%X 3-(9&#8242;,10&#8242;-Dihydro-9&#8242;,10&#8242;-ethanoanthracen-11&#8242;-ylidene)prop-2-enoyl chloride and its &#91;12&#8242;,12&#8242;- 2 H2&#93; and &#91;1- 13 C&#93; isotopomers have been prepared and pyrolysed. Argon matrix infrared spectroscopy showed &nu;2 bands at 2207 . 7, 2207 . 0, and 2168 . 5 cm&#8722;1 respectively for the three pentatetraenone isotopomers. The pyrolysate of the 12&#8242;-methyl substituted precursor showed a band at 2205 cm&#8722;1 which was tentatively assigned to methylpentatetraenone. The 12&#8242;-ethenyl substituted precursor gave a pyrolysate showing ketene bands but also yielded 9,10-dihydro-9,10&#91;1&#8242;,2&#8242;&#93;-benzenoanthracene. 
