
%0 Journal Article
%A Brown, RFC 
%A Browne, NR 
%A Coulston, KJ 
%A Eastwood, FW 
%T The Pyrolysis of 4,7-Dimethylcyclobuta-[b]naphthalene-1,2-dione; Failure to Detect Hydrogen Migration in 5,8-Dimethyl-2,3-didehydronaphthalene
%J Australian Journal of Chemistry
%D 1990/11/01
%V 43
%N 11
%P 1935-1940
%K 
%R https://doi.org/10.1071/CH9901935
%U https://www.publish.csiro.au/paper/CH9901935 
%X 5,8-Dimethylnaphthalene-2,3-dicarboxylic anhydride (8) is not significantly decomposed on pyrolysis at 950&#176;/0.05 mm. The corresponding cyclobutanaphthalene-1,2-dione (9) on pyrolysis at 670&#176;/0.06mm gave 1,4-dimethylnaphthalene (17%), 1,4,7,10- tetramethyldibenzo [ b,h ] biphenylene (15) (3%), unidentified products, and much carbon. There was no evidence for hydrogen migration leading to the rearrangement of the 2,3-didehydronaphthalene (10) to the 1,2-didehydronaphthalene (11). 
