
TY  - JOUR
A1  - Brown, RFC 
A1  - Browne, NR 
A1  - Coulston, KJ 
A1  - Eastwood, FW 
T1  - The Pyrolysis of 4,7-Dimethylcyclobuta-[b]naphthalene-1,2-dione; Failure to Detect Hydrogen Migration in 5,8-Dimethyl-2,3-didehydronaphthalene
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1990
VL  - 43
IS  - 11
SP  - 1935
EP  - 1940
KW  - 
UR  - https://doi.org/10.1071/CH9901935 
N2  - 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). 
ER  -

