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5311020 
Journal Article 
Flow-vacuum pyrolysis of polycyclic compounds .11. Pyrolysis of three dibenzocycloheptane ketones 
Banciu, MD; Mangra, C; Petride, A; Banciu, A; Popilian, R 
1996 
Yes 
Bulletin Soc Chim Belg
ISSN: 0037-9646 
SOC CHIMIQUE BELGIQUE 
BRUSSELS 
105 
6 
329-334 
WOS:A1996UY39400007 
The now-vacuum pyrolyses of 5H-dibenzo[a,d]cyclohepten-5-one (5); 10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-one (6) and 5,7-dihydro-6H-dibenzo[a,c]cycloheptena-6-one (7) were examined at 1.033 mbar and different temperatures between 850 degrees C and 1050 degrees C. The formation and the time dependence of reaction products (phenanthrene from 5; anthracene, phenanthrene, fluorene, dihydrophenanthrene from 6; phenanthrene, dihydrophenanthrene and fluorene from 7) as function of temperature are discussed. The suggested reaction mechanisms am compared with related literature data.