FLOW-VACUUM PYROLYSIS OF POLYCYCLIC COMPOUNDS .3. FLOW-VACUUM PYROLYSIS OF HYDRO-5,10-ETHANO-5H-DIBENZO[A,D]CYCLOHEPTEN-11-YL ACETATE AND OF ENDO-10,11-DIHYDRO-5,10-ETHANO-5H-DIBENZO [A,D] CYCLOHEPTEN-11-OL

Authors
BANCIU MD STANESCU MD FLOREA C PETRIDE A CIORANESCU E
Citation
Md. Banciu et al., FLOW-VACUUM PYROLYSIS OF POLYCYCLIC COMPOUNDS .3. FLOW-VACUUM PYROLYSIS OF HYDRO-5,10-ETHANO-5H-DIBENZO[A,D]CYCLOHEPTEN-11-YL ACETATE AND OF ENDO-10,11-DIHYDRO-5,10-ETHANO-5H-DIBENZO [A,D] CYCLOHEPTEN-11-OL, Revue Roumaine de Chimie, 37(11-12), 1992, pp. 1211-1217
Citations number
9
Categorie Soggetti
Chemistry
Journal title
Revue Roumaine de Chimie → ACNP
ISSN journal
00353930
Volume
37
Issue
11-12
Year of publication
1992
Pages
1211 - 1217
Database
ISI
SICI code
0035-3930(1992)37:11-12<1211:FPOPC.>2.0.ZU;2-W
Abstract
The flow-vacuum pyrolyses of title compounds 6 and 7 were examined at 1 Torr and various temperatures between 250-degrees (respectively 300- degrees) and 650-degrees. From both pyrolyses the following hydrocarbo ns were formed: 9,10-dihydro-9,10-propenoanthracene (1), 1, 1a, 1,6-me thano-dibenzo[a,c]cyclo-propa[c]cycloheptene (2), 11,11a-dihydro-6aH-b enzo[a]fluorene (3), 6,11-dihydro -5H-benzo [a]-fluorene (4), 11H-benz o [a]fluorene (5) and anthracene. Besides these products the epimeric exo-acetate 10 was formed in pyrolysis of endo-acetate 6 whereas from pyrolysis of 7 important amounts of corresponding ketone 9 were obtain ed. A radical mechanism is suggested.